Question

Why did Japan enter World War I?
A. China declared war on Japan, who had a military alliance with the Allied powers.
B. Japan entered the war in hopes of winning back the Philippines from the United states.
C. Germany promised Japan territory in China and other regions of Southeast Asia if it joined the side of the Central powers.
D. The British government asked for help fighting German raiders in the waters around Japan, Japan also had territorial ambitions in the region.
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Answer 1

"C. Germany promised Japan territory in China and other regions of Southeast Asia if it joined the side of the Central powers" is the best option from the list. This is mostly because Japan was such a small island country with limited resources and needed desperately expand.