Final answer:
The Pearl Harbor incident was a surprise attack launched by the Japanese navy on the American Pacific Fleet on December 7, 1941. It resulted in the deaths of over 2,000 US servicemen and servicewomen and the US declaration of war against Japan, Germany, and Italy.
Step-by-step explanation:
The Pearl Harbor incident refers to a surprise attack on the American Pacific Fleet by the Japanese navy on December 7, 1941. This attack took place at Pearl Harbor in Hawaii and resulted in the deaths of over 2,000 US servicemen and servicewomen. The fleet was greatly reduced in effectiveness, but US aircraft carriers were not destroyed. The attack led the US to declare war against Japan, Germany, and Italy.