Master America's Foreign Policy 2025 - Ace the Exam and Shape Global Futures!

The shift from isolationism to internationalism after World War I was primarily driven by the increased economic prosperity and international influence experienced by the United States during and after the war. The war significantly boosted the U.S. economy, transforming it into one of the world's foremost financial powers. This economic growth fostered a greater interest in global affairs, as American businesses sought new markets and opportunities abroad.

By engaging more actively in international politics and institutions, the U.S. aimed to secure its economic interests and promote a stable global environment conducive to trade and investment. The establishment of organizations such as the League of Nations, although the U.S. did not join it, reflects an increased recognition of the need for collective security and diplomatic engagement. Thus, the momentum of economic prosperity encouraged the U.S. to adopt a more internationalist stance, moving away from the isolationist policies that had characterized its approach prior to the war.