Timeline

Ronald Wilson Reagan (February 6, 1911 – June 5, 2004) was an American politician and actor who served as the 40th president of the United States from 1981 to 1989. A member of the Republican Party, he became an important figure in the American conservative movement. The period encompassing his presidency is known as the Reagan era. Born in Tampico, Illinois, Reagan graduated from Eureka College in 1932 and was hired the next year as a sports broadcaster in Iowa.

The Korean War (25 June 1950 – 27 July 1953) was an armed conflict fought on the Korean Peninsula between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK) and their allies. North Korea was supported by China and the Soviet Union, while South Korea was supported by the United Nations led by the United States under the auspices of the United Nations Command (UNC). After the end of World War II in 1945, Korea, which had been a Japanese colony for 35 years, was divided by the Soviet Union and the United States into two occupation zones at the 38th parallel, with plans for a future independent state. The zones formed their own governments in 1948 due to political disagreements. North Korea was led by Kim Il Sung in Pyongyang, and South Korea by Syngman Rhee in Seoul; both claimed to be the sole legitimate government of all of Korea. Rhee's government suppressed socialist uprisings at Jeju and Yeosu-Suncheon, and both sides engaged in extensive border clashes. On 25 June 1950, the North Korea's Korean People's Army (KPA) launched an invasion of the south. In the absence of the Soviet Union's representative, the UN Security Council denounced the attack and called on member nations to provide military assistance to repel the invasion. UN forces under the unified command comprised 21 countries, with the US providing around 90% of military personnel. On 27 June 1950 President Harry S. Truman ordered US air and sea forces to aid South K

Mao Zedong was a Chinese revolutionary, politician, writer, political theorist and the founder of the People's Republic of China (PRC). He led China from the PRC's establishment in October 1949 until his death in September 1976, primarily through his role as the Chairman of the Chinese Communist Party (CCP). His theories, which he advocated as a Chinese adaptation of Marxism–Leninism, are known as Maoism.

Fidel Alejandro Castro Ruz was a Cuban politician and revolutionary who was the leader of Cuba from 1959 to 2008, serving as prime minister from 1959 to 1976 and president from 1976 to 2008. Ideologically a Marxist–Leninist and Cuban nationalist, he also served as the first secretary of the Communist Party of Cuba from 1965 until 2011. Under his administration, Cuba became a one-party communist state; industry and business were nationalized, and socialist reforms were implemented throughout society.

The Berlin Wall was a guarded concrete barrier that encircled West Berlin from 1961 to 1989, separating it from East Berlin and the German Democratic Republic. Construction of the Berlin Wall was commenced by the government of the GDR on 13 August 1961. It included guard towers placed along large concrete walls, accompanied by a wide area that contained anti-vehicle trenches, beds of nails and other defenses. The primary intention for the Wall's construction was to prevent East German citizens from fleeing to the West.

Nikita Sergeyevich Khrushchev (15 April [O.S. 3 April] 1894 – 11 September 1971) was the First Secretary of the Communist Party of the Soviet Union from 1953 to 1964 and the Chairman of the Council of Ministers from 1958 to 1964. As leader of the Soviet Union, he shocked the world by denouncing his predecessor Joseph Stalin, embarking on a campaign of de-Stalinization, and presiding over the Cuban Missile Crisis in 1962. Born in a village near Kursk, Khrushchev was employed as a metal worker during his youth and was a political commissar in the Russian Civil War. Under the sponsorship of Lazar Kaganovich, he rose through the ranks of the Soviet hierarchy.

The Cuban Missile Crisis, also known as the October Crisis in Cuba, or the Caribbean Crisis, was a 13-day confrontation between the governments of the United States and the Soviet Union, when American deployments of nuclear missiles in the United Kingdom, Italy and Turkey were matched by Soviet deployments of nuclear missiles in Cuba. The crisis lasted from 16 to 28 October 1962. The confrontation is widely considered the closest the Cold War came to escalating into full-scale nuclear war.

John Fitzgerald Kennedy (May 29, 1917 – November 22, 1963), also known as JFK, was the 35th president of the United States, serving from 1961 until his assassination in 1963. He was the youngest person elected president, at 43 years, and the first Catholic president. Kennedy served at the height of the Cold War, and the majority of his foreign policy concerned relations with the Soviet Union and Cuba. A member of the Democratic Party, Kennedy represented Massachusetts in both houses of the United States Congress before his presidency. Born into the prominent Kennedy family in Brookline, Massachusetts, Kennedy graduated from Harvard University in 1940, joining the U.S. Naval Reserve the following year. During World War II, he commanded PT boats in the Pacific theater. Kennedy's survival following the sinking of PT-109 and his rescue of his fellow sailors made him a war hero and earned the Navy and Marine Corps Medal, but left him with serious injuries. After a brief stint in journalism, Kennedy represented a working-class Boston district in the U.S. House of Representatives from 1947 to 1953. He was subsequently elected to the U.S. Senate, serving as the junior senator from Massachusetts from 1953 to 1960. While in the Senate, Kennedy published his book Profiles in Courage, which won a Pulitzer Prize. Kennedy ran in the 1960 presidential election. His campaign gained momentum after the first televised presidential debates in American history, and he was elected president, narr

The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam was supported by the Soviet Union and China, while South Vietnam was supported by the United States and other anti-communist nations. The conflict was the second of the Indochina wars and a proxy war of the Cold War between the Soviet Union and US. The Vietnam War was one of the postcolonial wars of national liberation, a theater in the Cold War, and a civil war, with civil warfare a defining feature from the outset. Direct US military involvement escalated from 1965 until US forces were withdrawn in 1973.

The Berlin Wall fell on 9 November 1989 during the Peaceful Revolution, marking the beginning of the destruction of the figurative Iron Curtain, as East Berlin transit restrictions were overwhelmed and discarded. Sections of the wall were breached, and planned deconstruction began the following June. It was one of the series of events that started the fall of communism in Central and Eastern Europe. The fall of the inner German border took place shortly afterward. An end to the Cold War was declared at the Malta Summit in early December, and German reunification took place in October the following year.

Mikhail Sergeyevich Gorbachev was a Soviet and Russian politician who was the last leader of the Soviet Union from 1985 until the country's dissolution in 1991. He served as General Secretary of the Communist Party from 1985, and additionally as head of state from 1988. Ideologically, he initially adhered to Marxism–Leninism, but moved towards social democracy by the early 1990s.