Answer: The main event described in the article is the attack on Pearl Harbor in the World War II. There were multiple causes which led to this event.
1. Americans wanted to stay neutral in the upcoming war, due to the atrocities of the World War I. "Americans remembered the horrors of World War I, which took place from 1914-1918. They hoped to stay out of the problems in Europe this time."
2. The Great Depression influenced the crisis in Europe, and brought Hitler and the Nazis into power. USA wanted to stay isolated from these events and keep their neutrality. "In the 1930s Americans were more worried about their own problems than problems in Europe".
3. In order to help the British, Roosevelt needed to change the legislation but still keep USA neutral. They decided to "lend" weapons and ammunition to their allies in order to help them fight Hitler. "The United States could simply lend Britain weapons to fight the war."
4. United States finally entered the World War II when Japanese attacked the US military ships on Perl Harbor. "Faced with an assault on its own forces, the United States finally entered the World War II."
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