Here are the descriptions of events matched with the appropriate countries following World War II:
China: Communists led by Mao Zedong took control following a civil war and established one-party authoritarian rule here.
Japan: The United States helped establish a democratic government focused on economic growth here.
Korea: Communist and anti-communist forces backed by foreign nations went to war here, dividing the country into North and South.
Taiwan: Nationalists fled their homeland to establish a dictatorship with a market economy here.