Question

What event caused many americans to move away from isolationism and toward support for american involvement in world war i?

Answer 1

Answer: Pearl Harbor

Explanation: News of the attack reached Washington, D.C., and the following day, President Roosevelt declared that it was "a day which will live in infamy" and asked Congress for a declaration of war on Japan. The outrage of U.S. citizens following the attack meant the end isolationism in the country.