How did the attack on Pearl Harbor change the course of World War II

On the southern end of Oahu, Pearl Harbor held a 22,000 acre naval base. Admiral Husband E. Kimmel of the Navy and Lt. General Walter C. Short of the Army were in command of the fleet and troops on the ground, respectively. The majority of the Pacific area’s military commands were headquartered there because of growing apprehensions regarding an aggressive Japanese presence.

Well for starters i t changed the course of WW2 because it fored the American Millitary to enter World War when before they wamted no involvement. As a result of the attack the American Millitary bombed the Japanese cities of Hiroshima and Nagasaki. The attack also marked the beginning of the Pacific War.