I believe it is building igloos
After the loss and withdraw of American troops from South Vietnam in 1976 during the Fall of Saigon the Viet Cong pushed into Saigon and took control of South Vietnam. Thus ending the "war" and South Vietnam being reunited with the North under one communist government
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After the end of the Cold War, Communism would also end in Mongolia, Congo, Albania, Yugoslavia, Afghanistan, and Angola. Today there are only 5 remaining countries in the world ruled by communist single parties: China, Cuba, Laos, North Korea, and Vietnam.
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