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Answer:

On September 27, 1940, Japan signed the Tripartite Pact with Germany and Italy, thus entering the military alliance known as the "Axis." Seeking to curb Japanese aggression and force a withdrawal of Japanese forces from Manchuria and China, the United States imposed economic sanctions on Japan.

Explanation:

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Answer:

Japan's expansionist ambitions led to the outbreak of the Second Sino-Japanese War in 1937.In response to American economic sanctions, Japan forged an alliance with Germany and Italy in 1940 known as the Tripartite Pact.

Explanation:

The immediate cause of World War II in the Pacific was the Japanese attack on the United States naval base at Pearl Harbor in Hawaii. Going back a little further, the cause was really United States opposition to Japanese expansion in southeast Asia and the Pacific.

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