Why US entered in world war II

Correct answer

Due to pearl harbour attack by Japan

Explanation

Explanation History: The United States is generally considered to have entered the conflict with the 7 December 1941 surprise attack on Pearl Harbor by the Empire of Japan and exited it with the 2 September 1945 surrender of Japan. The Japanese attack on the US naval base in Pearl Harbor, Hawaii, led P resident Franklin Roosevelt to declare war on Japan. A few days later, Nazi Germany declared war on the United States , and America entered World War II against the Axis powers. *** World War II or the Second World War, was a global war t hat started from 1939 The Little Boy type of bomb, was dropped on the Japanese city of Hiroshima on 6 August 1945 during World War II The Fat Man was dropped on Nagasaki, Japan, on August 9, 1945, at 11:01 AM the 2nd World War End on 1945