The Khmer Rouge used children as soldiers in its five-year-long civil war to establish a communist government in Cambodia.
During the Vietnam War, fighting spilled over into neighboring Cambodia. The North Vietnamese sent supplies through Cambodia to guerrilla forces in South Vietnam. In 1969, the United States bombed those routes and then briefly invaded Cambodia.
After the Americans left, Cambodian communist guerrillas, the Khmer Rouge (kuh MEHR roozh), gained ground and overthrew the government in 1975. Led by the brutal dictator Pol Pot, the Khmer Rouge unleashed a reign of terror. To destroy all Western influences, they drove people from the cities and forced them to work in the fields. They slaughtered, starved, or worked to death more than one million Cambodians, about a third of the population.
In 1979, Vietnam invaded and occupied Cambodia, ending the genocide. Pol Pot and his forces retreated to remote areas. In 1993, UN peacekeepers supervised elections. Despite guerrillas who still terrorized parts of the country, a new government began to rebuild Cambodia.
Why did the United States withdraw its troops from Vietnam?