What were some of the aftereffects of Pearl Harbor?

Answer 1

The attack on Pearl Harbor was the trigger that brought the United States into WWII. The attack severely crippled the American Pacific Fleet by taking all of their battleships out of action as well as a number of other surface vessels. Because of the damage to the Pacific Fleet, the US Navy had to use a very conservative war plan for the first year or so of the war against Japan. It wasn't until the fleet was rebuilt that the United States was able to effectively fight the Japanese on even terms and begin to retake islands and territories in the Pacific.