<Li> Cuba and the Caribbean saw its greatest unemployment during the 1930s because of a decline in exports to the U.S., and a fall in export prices . </Li> <Ul> <Li> China was at war with Japan during most of the 1930s, in addition to internal struggles between Chiang Kai - shek's nationalists and Mao Zedong's communists . </Li> <Li> Japan's economy expanded at the rate of 5% of GDP per year after the years of modernization . Manufacturing and mining came to account for more than 30% of GDP, more than twice the value for the agricultural sector . Most industrial growth, however, was geared toward expanding the nation's military power . Beginning in 1937 much of Japan's energy was focused on a large - scale war and occupation of China . </Li> </Ul> <Li> China was at war with Japan during most of the 1930s, in addition to internal struggles between Chiang Kai - shek's nationalists and Mao Zedong's communists . </Li> <Li> Japan's economy expanded at the rate of 5% of GDP per year after the years of modernization . Manufacturing and mining came to account for more than 30% of GDP, more than twice the value for the agricultural sector . Most industrial growth, however, was geared toward expanding the nation's military power . Beginning in 1937 much of Japan's energy was focused on a large - scale war and occupation of China . </Li>

What was one reason that the great depression spread quickly from the united states to other nations