Please be more specific about which Japanese War you are referring to. There are many wars they were in with China, Korea, Russia and WWII.
America declared war on Japan, after Japan attacked Pearl Harbour, in Hawaii.
The US supported Ho Chi Minh fight the Japanese in Vietnam as part of their war with Japan .
There really was no war in which Japan annexed Korea. Japan engaged in the Russo-Japanese war and the Sino-Japanese war to eliminate any foreign interference to their plans to colonize Korea.
A declared war with Japan. A declared war with Japan.
Japan.
The Russo-Japanese war lasted from 1904-1905 and was won by the Japanese.
War between Russia & Japan in 1904.
Japan was in the Russo-Japanese War, the Boxer Rebellion, two Sino-Japanese Wars, World War 1, and World War 2. In all cases the goal was imperial expansion.
The US had banned the sale of oil to the Japanese. It was one of the commodities that were in short supply in that part of the war. The Japanese felt it was tantamount to declaring war on them.
Yes the Philippines, as part of the US, fought against the Japanese during World War 2.
Russia and Japan.
Japan.