Which nation was the worlds economic leader after World War I?

After World War I, the United States emerged as the world's economic leader. The war significantly boosted the U.S. economy, transforming it into a major industrial power while European nations were left economically weakened and in debt. By the 1920s, the U.S. was dominating global trade and finance, establishing the dollar as the primary reserve currency. This shift marked the beginning of America's prominence in the global economic landscape.