Listen and review some key ideas concerning the US and WWII. Initially, the United States response to the war was one of neutrality. The United States would supply war materials under the Lend-Lease Act. The bombing of Pearl Harbor would bring the United States direcyly involved in an second world war. The result, however, would be victory for the Allies and a stronger United States. The Soviet Union would also emerge as a powerful nation, leading the world into the Cold War period.