After Pearl Harbor and the U.S.declaration of war on Japan

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After the US declaration of war on Japan, Germany declared war on the US on December 11th, 1941. This caused the US to enter World War II on multiple fronts. The other answer choices are incorrect. Japan did not develop plans to conquer the American Pacific coast but rather focused on their defensive strategy. The Japanese did not offer to negotiate peace with the US after Pearl Harbor. The Soviet Union did not immediately attack Japan but only entered the war against Japan in August 1945, shortly before Japan's surrender. Roosevelt did not order the atomic bomb attack on Japan until 1945.