There were almost 700 thousand slaves in the U.S. in 1790, which equated to approximately 18 percent of the total population, or roughly one in six people. By 1860, the final census taken before the American Civil War, there were four million slaves in the South, compared with less than 500,000 free Black Americans in all of the U.S.. Of the 4.4 million Blacks in the U.S. before the war, almost four million of these people were held as slaves; meaning that for all African Americans living in the US in 1860, there was an 89 percent* chance that they lived in slavery. A brief history Trans-Atlantic slavery began in the early 16th century, when the Portuguese and Spanish forcefully brought enslaved Africans to the New World. The British Empire introduced slavery to North America on a large scale, and the economy of the British colonies there depended on slave labor, particularly regarding cotton, sugar, and tobacco output. In the seventeenth and eighteenth century the number of slaves being brought to the Americas increased exponentially, and at the time of American independence it was legal in all thirteen colonies. Although slavery became increasingly prohibited in the north, the number of slaves remained high during this time as they were simply relocated or sold from the north to the south. It is also important to remember that the children of slaves were also viewed as property, and were overwhelmingly born into a life of slavery. Abolition and the American Civil War In the years that followed independence, the Northern States gradually prohibited slavery, it was officially abolished there by 1805, and the importation of slave labor was prohibited nationwide from 1808 (although both still existed in practice after this). Business owners in the Southern States however depended on slave labor in order to meet the demand of their rapidly expanding industries, and the issue of slavery continued to polarize American society in the decades to come. This culminated in the election of President Abraham Lincoln in 1860, who promised to prohibit slavery in the newly acquired territories to the west, leading to the American Civil War from 1861 to 1865. Although the Confederacy (south) took the upper hand in much of the early stages of the war, the strength in numbers of the northern states including many free, Black men, eventually resulted in a victory for the Union (north), and the nationwide abolishment of slavery with the Thirteenth Amendment in 1865. Legacy In total, an estimated twelve to thirteen million Africans were transported to the Americas as slaves, and this does not include the high number who did not survive the journey (which was as high as 23 percent in some years). In the 150 years since the abolition of slavery in the US, the African-American community have continuously campaigned for equal rights and opportunities that were not afforded to them along with freedom. The most prominent themes have been the Civil Rights Movement, voter suppression, mass incarceration, and the relationship between the police and the African-American community.

Between 1501 and 1866, it is estimated that over 12.5 million people were forced onto ships in Africa, and transported to the Americas as slaves. Furthermore, it is estimated that only 10.7 million of these slaves disembarked on the other side of the Atlantic, meaning that roughly 1.8 million did not survive the journey. The transatlantic slave trade was a part of the triangular trade route between Europe, Africa and the Americas, during the sixteenth and nineteenth centuries. Generally speaking, this route saw European merchants bring manufactured products to Africa to trade for slaves, then transport the slaves to the Americas to harvest raw materials, before taking these materials back to Europe where they would then be consumed or used in manufacturing. Slavery was an integral part in funding the expansion of Europe's colonial empires, which shaped the modern and highly globalized world in which we live today.

The Middle Passage As with trade, the slave journey was also broken into three parts; the First Passage was the stage where slaves were captured and transported to African ports, the Middle Passage was the journey across the Atlantic, while the Final Passage was where the slaves were transported to their place of work. The death toll in the First Passage is thought to be the highest of the three stages, as millions were killed or fatally wounded as they were captured, however a lack of written data and historical evidence has made this number difficult to estimate. In contrast, shipping records from the time give a much more accurate picture of the Middle Passage's death toll, and this data suggest that roughly 14.5 percent of slaves did not survive the journey. The reason for this was the harsh and cramped conditions on board; slave ships were designed in such a way that they could fit the maximum number of slaves on board in order to maximize profits. These conditions then facilitated the spread of diseases, such as smallpox and dysentery, while malnutrition and thirst created further problems. Generally, slavers aimed to keep slaves as healthy (therefore; profitable) as possible, although there are countless examples of mistreatment and punishment of slaves by their captors, and several cases where slaves were exterminated by the crew as provisions ran low.

Rise and fall of the transatlantic slave trade

The European arrival in the Americas also saw the introduction of virgin soil epidemics (new diseases being introduced to biologically defenseless populations) which decimated the indigenous populations. The abundance of natural resources, but lack of available labor led to the rise of the transatlantic slave trade. Until the mid-1600s, Portuguese traders had a near-monopoly on this trade, supplying slaves to the newly expanding Spanish and Portuguese empires in South America. As other European powers began to expand their empires in the Caribbean and North America, the slave trade grew dramatically, and during the eighteenth century, the number of slaves being brought to the New World increased from an annual average of thirty thousand in the 1690s to 87 thousand in the 1790s. The transatlantic slave trade reached its peak between the 1750 and 1850, and an average of 74 thousand slaves were brought to the Americas each year between these dates. The largest decline came as the slave trade was disrupted during the American War of Independence (1775-1783), although the trade became weakened as the abolitionist movement gained momentum in Europe and the Americas around the turn of the century. The most significant impacts came as the slave trade was abolished in Britain and the U.S. in 1807 and Brazil in 1831, and Britain then used its position as the global superpower to impose abolition on other nations and used the Royal Navy to enforce these measures. While most nations abolished the slave trade in the early 1800s, it would take decades before the actual practice of slavery would be abolished; today, slavery is illegal in almost every country, however modern slavery in the forms of forced labor, human trafficking and sexual exploitation continues to be prevalent across the globe.

Between 1628 and 1860, it is estimated that almost 390 thousand Africans were transported as slaves to European colonies in Mainland North America. This figure refers only to those who survived the journey, as it is also thought that over 470 thousand captives embarked on these ships at African ports, however 84 thousand died en route (giving a mortality rate of 17.7 percent). The transportation of African slaves to the Thirteen Colonies was highest in the mid-18th century (although there was some fluctuation), before an observable decline around the time of the American Revolutionary War. Following independence, the importation of slaves remained lower than in previous decades, until it saw a sharp increase in the five years leading up to the slave trade's abolition. In 1807 alone, the year before the U.S. abolished the slave trade, almost 29 thousand slaves were imported from Africa into the U.S. Following this, activity declined greatly; the relatively small number of slaves imported from Africa to the U.S. were most likely into the Spanish territory of Florida. Smuggling also existed on a smaller scale; this accounts for the entries in 1858 and 1860.

At the beginning of the 19th century, the U.S. labor force was approximately 1.9 million people, with slaves making up over half a million (28 percent) of this number. The share of slaves then increased to almost one third of the overall workforce in the next decade, but dropped to roughly one fifth by 1860; the year before the American Civil War. While the total number of slaves grew by several hundred thousand in each decade, their share of the U.S. labor force decreased due to the high levels of European migration to the U.S. throughout the 19th century. This wave of mass migration was an influential factor in slavery's eventual abolition, as Europeans met the labor demands that had previously been fulfilled by slaves, and those fleeing persecution and oppression in Europe were often sympathetic to the plight of slaves. Nonetheless, the majority of European migrants arrived in the industrialized, northern states, most of which had already abolished slavery in the 18th century, and slave labor was concentrated in the agricultural south at this time; this divide would prove fundamental in the outbreak of the American Civil War.

This statistic shows the number of black men and women in the US from 1820 until 1880. Slavery was legal in the Southern States of the US until 1865, when the Thirteenth Amendment was added to the US Constitution after the American Civil War. Until that time all of the slaves included in this statistic were registered as living in the South, whereas the majority of the free, black men and women lived in the Northern States. From the data we can see that, while the slave experience was very different for men and women, there was relatively little difference between their numbers in each respective category. While female slaves were more likely to serve in domestic roles, they were also more likely to be working in the lowest and unskilled jobs on plantations, whereas men were given more skilled and physically demanding roles. As slavery was abolished in 1870, all black people from this point were considered free in the census data. It is also worth noticing that in these years the difference in the number of men and women increased, most likely as a result of all the black male soldiers who fell fighting in the American Civil War.

This study includes data on slave sales that occurred on the New Orleans slave market between 1804-1862. For each sale, information was recorded on the date of the sale, the number of slaves on the invoice, the geographical origin of the buyer and seller, the sale price, and characteristics of the slaves sold (age, sex, family relationship, and occupation). The information presented for each transaction was obtained from the notarized bills of sale in the New Orleans Notarial Archival Office. These bills often contained information on several persons who were sold in a group or as a "lot." Whenever feasible, sale and personal characteristics of individuals appearing in such groups were entered on separate records. This was usually done when separate sale prices were recorded for each member of the group. When separate prices were not recorded for children sold in a group, information describing those children was attached to the record of a principal slave with whom they were associated on the original bill of sale.

Abstract copyright UK Data Service and data collection copyright owner. The purpose of this study was to examine the growth of slave trade to the America's, the internal dynamics of its volume, and how it compared with other trades within the British Empire and with other leading slave trade routes of other European powers. Main Topics: Variables Ship's name, tonnage, home port of ship, departure date, African port of arrival, date of African arrival, slaves taken on board (total number), slave mortality, slaves relanded before African port departure, number of slaves shipped, date of African departure, American port of arrival, date of arrival in New World, number of slaves landed, date ship left America. Please note: this study does not include information on named individuals and would therefore not be useful for personal family history research. Purposive selection/case studies Compilation or synthesis of existing material

Throughout the history of the transatlantic slave trade, approximately 5.7 million of the 12.5 million African slaves who embarked on slave ships did so in ports along the region of West Central Africa and St. Helena. Today, these regions are in the countries of Angola, Democratic Republic of the Congo, Gabon, and the Republic of the Congo. The majority of the rest were taken from West Africa, embarking in ports between the present-day countries of Senegal and Gabon, while a smaller number of slaves were captured in the southeast of Africa. Senegambia and off-shore Atlantic islands had the highest number of captives taken from that region in the 16th century, however West Central Africa and St. Helena was the region where most slaves embarked on their journey across the Atlantic in the following centuries. As Portuguese traders were responsible for transporting the largest volume of slaves to the Americas, it is unsurprising that many of the busiest ports in the transatlantic slave trade were in Portuguese-controlled enclaves along the African coast.

The "Enslaved People in the African American National Biography, 1508-1865" dataset builds on the complete print and online collection of the African American National Biography (AANB), edited by Henry Louis Gates, Jr. and Evelyn Brooks Higginbotham. The full collection contains over 6,000 biographical entries of named historical individuals, including 1,304 for subjects born before 1865 and the abolition of slavery in the United States. In making a subset of biographical entries from the multivolume work, the goal was to extract life details from those biographies into an easy-to-view database form that details whether a subject was enslaved for some or all of their lives and to provide the main biographical details of each subject for contextual analysis and comparison. 52 fields covering location data; gender; names, alternate names and suffixes; dates and places of birth and death; and up to 8 occupations were included. We also added 13 unique fields that provide biographical details on each subject: Free born in North America; Free before 13th Amendment; Ever Enslaved; How was freedom attained; Other/uncertain status; African born; Parent information; Runaways and rebels; Education/literacy; Religion; Slave narrative or memoir author; Notes; and Images.

This study uses historical records from 36 archives in the United States to analyze 8,437 enslaved people's sale and/or appraisal prices from 1797 to 1865.

Throughout the history of the transatlantic slave trade, approximately 5.7 million of the 12.5 million African slaves who embarked on slave ships did so in ports along the region of West Central Africa and St. Helena; of these 5.7 million, almost 3.9 million were destined for Brazil. This region was also the most common point of origin for slaves destined for the Spanish and Dutch Americas, and French colonies in the Caribbean. The majority of slaves destined for British colonies in the Caribbean were taken from ports along the Bight of Biafra or the Gold Coast, while the regions of Senegambia and nearby Atlantic islands was the most common for slaves destined for mainland North America. This data refers only to the number of slaves who embarked on ships in Africa, and not the number who disembarked; it is estimated that approximately 14.5 percent of slaves who embarked on ships destined for the Americas died during the Middle Passage.

Beginning in the 16th century, European traders began to buy or capture people in the African continent to enslave and sell for profit. This trade began with Portugal and Spain, but it later expanded to include France, England, the Netherlands and other European countries. By the time the trading of enslaved people was finally put to an end in the 19th century, Europeans had abducted an estimated 12.5 million African people from their homelands, forced them onto ships, trafficked them to the Americas, and sold them on the auction block. Almost two million people died during transport; most of the rest were forced into labor camps, also called plantations. This extensive and gruesome human trafficking is commonly referred to as the transatlantic slave trade. The Portuguese began human trafficking in Africa by trading manufactured goods or money for Africans who had been captured during local wars. Later, some Europeans captured Africans themselves or paid other local Africans to do it for them. Europeans traded for or kidnapped Africans from many points on Africa’s coast, including Angola, Senegambia and Mozambique. Most of the people who were enslaved by the Europeans came from West and Central Africa.The most brutal segment of the route was the Middle Passage, which transported chained African people across the Atlantic Ocean as they were packed tightly below the decks of purpose-built ships in unsanitary conditions. This trip could last weeks or even months depending on conditions, and the trafficked people were subjected to abuse, dangerously high heat, inadequate food and water, and low-oxygen environments. Olaudah Equiano, a young boy who was forced into the Middle Passage after being captured in his home country of Nigeria, later described the foul conditions as “intolerably loathsome” and detailed how people died from sickness and lack of air. Approximately 1.8 million African people are thought to have died during the passage, accounting for about 15–25 percent of those who were taken from Africa.For many enslaved Africans trafficked across the Atlantic, the port at which their ship landed was not their final destination. Enslaved people were often transported by ship between two points in the Americas, particularly from Portuguese, Dutch and British colonies to Spanish ones. This was the intra-American slave trade. No matter where they landed, enslaved Africans faced brutal living conditions and high mortality rates. Moreover, any children born to enslaved persons were also born into slavery, usually with no hope of ever gaining freedom.This data set is the culmination of decades of archival research compiled by the SlaveVoyages Consortium. This data represents the trafficking of enslaved Africans from 1514 to 1866. All mapmakers must make choices when presenting data. This map layer represents individuals who experts can definitively place at a given location on one of at least 36,000 transatlantic and at least 10,000 intra-American human trafficking routes. However, this means the enslaved people for whom records cannot place their departure or arrival with certainty do not appear on this map (approximately 170,985 people). This map, therefore, is part of the story and not a complete accounting. You can learn more about the methodology of this data collection here.

Initially taken in 1838 to demonstrate the stability and significance of the African American community and to forestall the abrogation of African American voting rights, the Quaker and Abolitionist census of African Americans was continued in 1847 and 1856 and present an invaluable view of the mid-nineteenth century African American population of Philadelphia. Although these censuses list only household heads, providing aggregate information for other household members, and exclude the substantial number of African Americans living in white households, they provide data not found in the federal population schedules. When combined with the information on African Americans taken from the four federal censuses, they offer researchers a richly detailed view of Philadelphia's African American community spanning some forty years. The three censuses are not of equal inclusiveness or quality, however. The 1838 and 1847 enumerations cover only the "old" City of Philadelphia (river-to-river and from Vine to South Streets) and the immediate surrounding districts (Spring Garden, Northern Liberties, Southwark, Moyamensing, Kensington--1838, West Philadelphia--1847); the 1856 survey includes African Americans living throughout the newly enlarged city which, as today, conforms to the boundaries of Philadelphia County. In spite of this deficiency in areal coverage, the earlier censuses are superior historical documents. The 1838 and 1847 censuses contain data on a wide range of social and demographic variables describing the household indicating address, household size, occupation, whether members were born in Pennsylvania, status-at-birth, debts, taxes, number of children attending school, names of beneficial societies and churches (1838), property brought to Philadelphia from other states (1838), sex composition (1847), age structure (1847), literacy (1847), size of rooms and number of people per room (1847), and miscellaneous remarks (1847). While the 1856 census includes the household address and reports literacy, occupation, status-at-birth, and occasional passing remarks about individual households and their occupants, it excludes the other informational categories. Moreover, unlike the other two surveys, it lists the occupations of only higher status African Americans, excluding unskilled and semiskilled designations, and records the status-at-birth of adults only. Indeed, it even fails to provide data permitting the calculation of the size and age and sex structure of households. Variables for each household head and his household include (differ slightly by census year): name, sex, status-at-birth, occupation, wages, real and personal property, literacy, education, religion, membership in beneficial societies and temperance societies, taxes, rents, dwelling size, address, slave or free birth.

Portuguese and Brazilian traders were responsible for transporting the highest volume of slaves during the transatlantic slave trade. Portugal held a near-monopoly on the transatlantic slave trade in the 16th century, due to their network of factories along the African coast, and also imported hundreds of thousands of slaves into Brazil and the Caribbean in the 19th century.

Emergence of other powers The rise of the British, French and Dutch empires in the 17th century was also fueled by profits made from slave labor, and, to a lesser extent, the slave trade. Throughout the 1700s especially, British ships transported more slaves across the Atlantic, as the empire expanded across the Caribbean and North America. Similarly to Britain, ships flying under the flag of the Thirteen Colonies or the U.S. saw relatively large growth from the mid-1700s onwards (apart from a brief disruption caused by the American Revolutionary War), with the number of slave imports peaking in the early years of the 1800s. However, both Britain and the U.S. abolished the slave trade in 1807 and 1808 respectively, which ended their official participation in the widespread importation of slaves. French imports of slaves peaked in the late 1780s, however the numbers then plummeted from 1790 onwards, due to the instability and turmoil caused by the French Revolution and Haitian Revolution.

The largest empire was one of the smallest slave importers While a significant number of slaves eventually ended up in the Spanish Americas, Spanish merchants did not explicitly transport slaves in the same quantities as other powers' merchants. The was rooted in the Spanish legacy of importing slaves through foreign powers (namely Portugal, largely due to the Treaty of Tordesillas), and the forced labor of indigenous societies. However this changed drastically in the 19th century, as independence movements swept across Spain's mainland colonies in the Americas, and Spain then invested heavily into its Caribbean colonies (particularly Cuba).

The Dutch-speaking Runaway Slaves dataset includes information 483 Dutch-speaking slaves and three black indentured servants who were reported fleeing their condition of bondage in the American colonies and early United States. The data comes primarily from newspaper advertisements digitized and made available through newspapers.com and ReadEx’s Early American Newspaper Database. This current database is the first to gather and organize data specifically concerning runaway slaves who spoke Dutch. The compilation of this data was primarily intended research on the language and economics of slavery in Dutch New York. The database includes 486 rows of entries, with eleven columns of data about Dutch-speaking runaway slaves. These eleven columns of data are as follows: Year, Name, Age, Sex, Language, Speaks, Owner, County, State, City, and Source.

"North American Slave Narratives" collects books and articles that document the individual and collective story of African Americans struggling for freedom and human rights in the eighteenth, nineteenth, and early twentieth centuries. This collection includes all the existing autobiographical narratives of fugitive and former slaves published as broadsides, pamphlets, or books in English up to 1920. Also included are many of the biographies of fugitive and former slaves and some significant fictionalized slave narratives published in English before 1920.

This project entailed recording and coding information from slave narratives gathered as part of the Federal Writers' Project. Between 1936 and 1938, federal authorities organized teams of interviewers in seventeen states who gathered the recollections of over two thousand former slaves. The typescript of these interviews, running to more than ten thousand pages, was deposited in the Library of Congress and has been available on microfiche for many years. Information on the actions, attitudes, beliefs and experiences of slaves was coded from 2,358 slave narratives.

This record is an unpublished report about the history of Native Americans, slaves and freedmen in the Pee Dee. It is a historical report but intended for use as educational material. The goal of this publication is to help teachers better present the unique and diverse history of the Pee Dee region to their students. We have incorporated three basic "themes' of Pee Dee history - - Native American, African American Slave and Plantation Life, and Postbellum Tenancy. In each we have tried to not only provide teachers with the background to integrate Pee Dee regional material into their classroom studies of South Carolina history, but also to begin implementing a integrated curricula which incorporates math and science. We have tried to encourage the use of higher learning skills - - while still providing plenty of latitude so all students could benefit from the materials. An integrated curricula, while relatively new to many programs, is very simple. It recognizes that our current method of teaching isolates both the student and the teacher from the broad pattern of interdisciplinary understanding. Integrated curricula allow the student to better understand how diverse concepts come together to promote a fuller understanding of the world and essential concepts. By integrating cultural heritage with components of math and science, this program provides a more exciting, and more worldly, view of South Carolina. It promotes a greater interest in both history and other disciplines. It also allows students and teachers to better understand the dynamic relationship between history, agricultural endeavors, and economic factors. It encourages students to understand, not simply to memorize and parrot. This integrated curricula is developed to increase critical thinking and maximize the participation of the student in the learning process. Coupled with a field trip to the archaeological site, students will have the opportunity to not only better understand the history of their region, but also to see that history being uncovered and explored through archaeology. This combination provides students and teachers with a rare opportunity. This booklet is organized to allow teachers to quickly identify the information essential for curriculum development -- maximizing the educational potential of the program. Included is information on the goals and objectives of this program, additional background information to provide teachers with the cultural heritage and history content necessary to teach the lessons, three individual teacher lesson plans, student worksheets, and extension activities. While designed for use primarily in Grade 8, to correlate with the instruction of South Carolina History, these materials have wide applicability. With relatively little modification they can be used in Grades 3-12. Teachers should also be aware that not only does Chicora Foundation offer additional programs and in-class room talks, but the Pee Dee Heritage Center, at Coker College, offers other unique teaching opportunities, including a "Tobacco History Curriculum" which traces the history of tobacco from Native American use to the early twentieth century. The Pee Dee Heritage Center can be reached at 803/383-8000 and Chicora's address and telephone number are listed on the title sheet of this publication.

Newspapers and newspaper printers played a crucial role in brokering the sales of enslaved people in eighteenth-century North America. This dataset collects information from more than 2,100 newspaper advertisements that document printers’ involvement in trafficking thousands of enslaved people. It extends from 1704, when the first long-running newspaper was published in North America, through 1807, after which the transatlantic slave trade officially ended and gradual abolition schemes in the north meant that the internal slave trade shifted slowly to the South. The dataset is useful for those interested in newspaper printers’ involvement in the internal slave trade, as well as particular transactions involving enslaved people. It includes available information about the subjects of each advertisement, as well as the terms of sale or transfer proposed by the advertiser.

Analysis unit

Persons, households, and dwellings

UNITS IDENTIFIED: - Dwellings: yes - Vacant Units: no - Households: yes - Individuals: yes - Group quarters: yes

UNIT DESCRIPTIONS: - Dwellings: A separate inhabited tenement, containing one or more families under one roof. Where several tenements are in one block, with walls either of brick or wood to divide them, having separate entrances, they are each to be numbered as separate houses; but where not so divided, they are to be numbered as one house. - Households: One person living separately in a house, or a part of a house, and providing for him or herself, or several persons living together in a house, or in part of a house, upon one common means of support, and separately from others in similar circumstances - Group quarters: Yes

Universe

All persons living in the United States including temporarily absent residents and sailors at sea, no matter how long they may have been absent, if they were believed to be still alive. "Indians not taxed", which refers to Native Americans living on reservations or under tribal rule. Native Americans who had renounced tribal rule and "exercise the rights of citizens" were to be enumerated.

Kind of data

Population and Housing Census [hh/popcen]

Sampling procedure

MICRODATA SOURCE: Department of the Interior

SAMPLE SIZE (person records): 273596.

SAMPLE DESIGN: 1-in-100 national random sample of the free population. African-American slaves are not included in this dataset. Individual-level data on the 1860 slave population is available at the

Mode of data collection

Face-to-face [f2f]

Research instrument

The census operation involved six forms. Form 1 was used to enumerate free persons and collected information on individual characteristics. Form 2 was used to enumerate slaves. Other forms were used to record information about agriculture and industry.