In 1938, the year before the Second World War, the United States had, by far, the largest economy in the world in terms of gross domestic product (GDP). The five Allied Great Powers that emerged victorious from the war, along with the three Axis Tripartite Pact countries that were ultimately defeated made up the eight largest independent economies in 1938.

When values are converted into 1990 international dollars, the U.S. GDP was over 800 billion dollars in 1938, which was more than double that of the second largest economy, the Soviet Union. Even the combined economies of the UK, its dominions, and colonies had a value of just over 680 billion 1990 dollars, showing that the United States had established itself as the world's leading economy during the interwar period (despite the Great Depression).

Interestingly, the British and Dutch colonies had larger combined GDPs than their respective metropoles, which was a key motivator for the Japanese invasion of these territories in East Asia during the war. Trade with neutral and non-belligerent countries also contributed greatly to the economic development of Allied and Axis powers throughout the war; for example, natural resources from Latin America were essential to the American war effort, while German manufacturing was often dependent on Swedish iron supplies.

With a Gross Domestic Product of over 4.18 trillion Euros, the German economy was by far the largest in Europe in 2023. The similarly sized economies of the United Kingdom and France were the second and third largest economies in Europe during this year, followed by Italy and Spain. The smallest economy in this statistic is that of the small Balkan nation of Montenegro, which had a GDP of 5.7 billion Euros. In this year, the combined GDP of the 27 member states that compose the European Union amounted to approximately 17.1 trillion Euros. The big five Germany’s economy has consistently had the largest economy in Europe since 1980, even before the reunification of West and East Germany. The United Kingdom, by contrast, has had mixed fortunes during the same period and had a smaller economy than Italy in the late 1980s. The UK also suffered more than the other major economies during the recession of the late 2000s, meaning the French economy was the second largest on the continent for some time afterward. The Spanish economy was continually the fifth-largest in Europe in this 38-year period, and from 2004 onwards, has been worth more than one trillion Euros. The smallest GDP, the highest economic growth in Europe Despite having the smallerst GDP of Europe, Montenegro emerged as the fastest growing economy in the continent, achieving an impressive annual growth rate of 4.5 percent, surpassing Turkey's growth rate of 4 percent. Overall,this Balkan nation has shown a remarkable economic recovery since the 2010 financial crisis, with its GDP projected to grow by 28.71 percent between 2024 and 2029. Contributing to this positive trend are successful tourism seasons in recent years, along with increased private consumption and rising imports. Europe's economic stagnation Malta, Albania, Iceland, and Croatia were among the countries reporting some of the highest growth rates this year. However, Europe's overall performance reflected a general slowdown in growth compared to the trend seen in 2021, during the post-pandemic recovery. Estonia experienced the sharpest negative growth in 2023, with its economy shrinking by 2.3% compared to 2022, primarily due to the negative impact of sanctions placed on its large neighbor, Russia. Other nations, including Sweden, Germany, and Finland, also recorded slight negative growth.

Luxembourg is by far the European country which had the largest stock of inward foreign direct investment (FDI) when compared with their gross domestic product (GDP). The stock of inward FDI in the small Western European country was worth over 14 times the country's annual GDP, reflecting the complete reliance of Luxembourg on foreign investors and companies. Luxembourg has become a hub of intra-European investment due to its strategic position as a center of EU administration and politics, its low corporation tax rates, and its relatively relaxed foreign investment regulations. Similarly, the Netherlands and Ireland have become hubs for foreign investment due to their more liberal investment regulations, with these countries having inward FDI stocks worth over 2.5 times their GDP. Conversely, Turkey, Italy, and Greece had inward FDI stocks worth less than a quarter of their GDP.

As of April 2025, the inflation rate in the European Union was 2.4 percent, with prices rising fastest in Romania, which had an inflation rate of 4.9 percent. By contrast, both France and Cyprus saw low inflation rates during the same period, with France having the lowest inflation rate in the EU during this month. The rate of inflation in the EU in the October 2022 was higher than at any other time, with the peak prior to 2021 recorded in July 2008 when prices were growing by 4.4 percent year-on-year. Before the recent rises in inflation, price rises in the EU had been kept at relatively low levels, with the inflation rate remaining below three percent between January 2012 and August 2021. Rapid recovery and energy costs driving inflation The reopening of the European economy in 2021 following the sudden shock of COVID-19 in 2020 is behind many of the factors that have caused prices to rise so quickly in 2022. Global supply chains have not yet recovered from production issues, travel restrictions, and workforce problems brought about by the pandemic. Rising energy costs have only served to exacerbate supply problems, particularly with regard to the transport sector, which had the highest inflation rate of any sector in the EU in December 2021. High inflation rates mirrored in the U.S. The high inflation rates seen in Europe have been reflected in other parts of the world. In the United States, for example, the consumer price index reached a 40-year-high of seven percent in December 2021, influenced by many of the same factors driving European inflation. Nevertheless, it is hoped that once these supply chain issues ease, inflation levels will start to fall throughout the course of 2022.