Complete the sentence about how the united states supported the allies before officially joining them in world war ii

In World War II the chief Allied powers were Great Britain, France (except during the German occupation, 1940–44), the Soviet Union (after its entry in June 1941), the United States (after its entry on December. In December 1941 Japan opened the war with its attack on Pearl Harbor, the US declared war on Japan, and Japan's allies Germany and Italy declared war on the US, bringing the US into World War II.er 8, 1941), and China.

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a stronger central government  

its what they are