Final answer:
The events that led to the United States ending isolation and entering the war were the attack on Pearl Harbor by Japan, the fall of France to Nazi Germany, and the signing of the Treaty of Versailles.
Step-by-step explanation:
Events that led to the United States ending isolation and entering the war:
- The attack on Pearl Harbor by Japan: On December 7, 1941, Japan launched a surprise attack on the U.S. Pacific Fleet at Pearl Harbor, Hawaii, which resulted in the U.S. declaring war on Japan the following day.
- The fall of France to Nazi Germany: In May 1940, Nazi Germany invaded and quickly defeated France, which raised concerns about the spread of fascism and the need for American intervention.
- The signing of the Treaty of Versailles: Although the Treaty of Versailles was signed at the end of World War I, it had long-lasting consequences that created tensions leading to World War II. The United States felt compelled to enter the war to address the escalating threats posed by aggressive powers.
These events ultimately prompted the United States to abandon its policy of isolationism and actively participate in World War II, aligning with the Allied powers to combat the Axis powers.
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