Answer:
Over the course of the war, the United States contracted Lend-Lease agreements with more than 30 countries, dispensing some $50 billion in assistance. The additional firepower, resources, and soldiers of the U.S. helped to tip the balance of the war in favor of the Allies in fight of WWII.
The attacks on Dec. 7, 1941 on pearl harbor, brought attention to the intelligence failures and the lack of readiness of the United States military. The attacks on Pearl Harbor galvanized the American people and they pulled together in unity, which helped create the United States into a world power
