 Complete the following phrase:  In the 1930s, the Great Depression wrecked Japans economy and gave radical elements within the Japanese military the chance to realize their ambitions of conquering all of Asia. In 1931, the Kwantung Army a Japanese military force stationed in Manchuria staged the Mukden Incident, which sparked the Invasion of Manchuria and its transformation into the Japanese puppet state of Manchukuo. Six years later, the Marco Polo Bridge Incident outside Peking sparked the Second Sino-Japanese War 19371945. Japanese troops streamed into China, conquering Peking, Shanghai, and the national capital of Nanking; the last conquest was followed by the Nanking Massacre. In 1940, Japan entered into an 