What event caused the U.S. to enter World War II? A The Japanese attack on Pearl Harbor A B The Soviet Union joining the Allies __ C The passage of the Civil Liberties Act of 1988 C D The removal of Japanese Americans from Bainbridge Isla D

## Step 1<br />The question is asking for the event that caused the U.S. to enter World War II. The options provided are:<br />A. The Japanese attack on Pearl Harbor<br />B. The Soviet Union joining the Allies<br />C. The passage of the Civil Liberties Act of 1988<br />D. The removal of Japanese Americans from Bainbridge Island<br /><br />## Step 2<br />The U.S. entered World War II after the Japanese attack on Pearl Harbor on December 7, 1941. This event led to the U.S. declaring war on Japan, marking the country's official entry into the war.<br /><br />## Step 3<br />The other options, such as the Soviet Union joining the Allies, the passage of the Civil Liberties Act of 1988, and the removal of Japanese Americans from Bainbridge Island, are not the events that caused the U.S. to enter World War II.