After the bombing of Pearl Harbor, the United States declared war on Japan and Great Britain joined them in that effort. Why might Great Britain and other European countries have joined the struggle against Japan?
A. Japan was a communist country.
B. Japan had invaded China, which was important to European trade.
C. Japan had allied itself to the Soviet Union, and Europe supported the US during the Cold War.
D. Japan had moved to seize other European colonies in Asia, such as the Dutch East Indies and British Malaya.