What countries were involved in World War II?


Quick Answer

During World War II, the United States, Great Britain and the Soviet Union were the main powers that fought on the Allied side against the Axis powers of Germany, Japan and Italy. Other countries that joined forces with the Allied side were France, Australia, Canada, New Zealand, India and Canada.

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Full Answer

The Axis powers started World War II when Germany began to invade and occupy smaller European countries, such as Austria and Poland. While Germany was going after most of Europe, Japan wanted to dominate Asia and the Pacific regions of the world. Japan's attack on Pearl Harbor, Hawaii prompted the United States to join the fighting on the Allied side.

While most of the world was pulled into the conflict in one way or another, there were also several countries that managed to stay neutral. Ireland, Portugal, Spain, Sweden and Switzerland all avoided conflict during World War II.

After several years of fighting, the Allied side was victorious and the war ended in 1945. In one of the last acts of the war, the Allies dropped atomic bombs on the cities of Hiroshima and Nagasaki in Japan. The vast damage led to Japan's surrender and the official end of World War II.

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