sentences:  In 1931 Japanese army units based in Manchuria seized control of the region; full-scale war with China followed in 1937, drawing Japan toward an overambitious bid for Asian hegemony (Greater East Asia Co-Prosperity Sphere), which ultimately led to defeat and the loss of all its overseas territories after World War II (see Japanese expansionism and Japanese nationalism).As in Korea, the Japanese treatment of the Chinese people was particularly brutal as exemplified by the Nanjing Massacre.Anticolonialist movements had begun to gain momentum after the close of World War I, which had seen colonial troops fight alongside those of the metropole, and U.S. President Woodrow Wilson's speech on the Fourteen Points.