Why did Japan enter World War I?

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. read more

In the first week of World War I Japan proposed to the United Kingdom, its ally since 1902, that Japan would enter the war if it could take Germany's Pacific territories. On 7 August 1914, the British government officially asked Japan for assistance in destroying the raiders from the Imperial German Navy in and around Chinese waters. read more