The Vietnam War was a long conflict that pitted the communist government of North Vietnam against South Vietnam and its principle ally, the United States.
As the United States poured men and money into South Vietnam, Chinese and Soviet involvement in Vietnam also increased. The Soviet Union and the People’s Republic of China also lent military support to North Vietnam.
Direct U.S. military involvement ended on August 15, 1973. USA left North Vietnam and South Vietnam.
Konstantin Chernerko was a soviet politician. He led the Soviet Union from February 13, 1984 until his death three months later on March 10, 1985.
Mikhail Gorbachevis selected as the new general secretary and leader of the Soviet Union, following the death of Konstantin Chernenko one day before.
The Berlin Wall was built in 1961 and its hight was was 11.81'. The Berlin Wall was destroyed in 1991.