Input (grade 11): This war followed the First Indochina War and was fought between North Vietnam, supported by its communist allies, and the government of South Vietnam, supported by the U.S. and other anti-communist nations.
Output (grade 8): It was fought between North Vietnam and South Vietnam. North Vietnam was supported by the USSR, China and North Korea, while South Vietnam was supported by the United States with its allies, Thailand, Australia, New Zealand, and the Philippines.