Which of the following events sparked the end of America’s isolationist policy?

Question

A
German U-boats attacked American ships, killing over one hundred Americans.

B
Hitler invaded Poland, Denmark, Norway, Belgium the Netherlands, and France.

C
In 1941, the Axis took control of most of Europe.

D
Europe’s leaders blamed foreigners for their countries’ problems.

Answer 1

The event that sparked the end of America’s isolationist policy is:

A: German U-boats attacked American ships, killing over one hundred Americans.

The attacks by German U-boats on American ships were a significant factor that pushed the United States toward involvement in World War II, leading to a departure from its isolationist stance.