1. What about the Pacific War?
The US (mainly) fought the Japanese.
December 7, 1941 Japan bombed Pearl Harbor in Hawaii to sink US ships there.
Two hours = most US Navy’s Pacific fleet destroyed and 2500 killed
18 ships and 300+ airplanes destroyed

5. Why did Japan Attack Pearl Harbor?
Preventive action to keep the U.S. Pacific Fleet from interfering with military actions the Empire of Japan was planning in Southeast Asia against overseas territories of the United Kingdom, the Netherlands, and the United States.
Simultaneous Japanese attacks on the U.S.-held Philippines and on the British Empire in Maylaya Singapore and Hong Kong

8. How did WWII end in the Pacific?
US drops atomic bombs on Hiroshima and Nagasaki. August 14, Japan surrenders unconditionally