(kiddle)

“The Truman Doctrine was a proclamation by United States President Harry S. Truman on March 12, 1947. It stated that the U.S. would support Greece and Turkey with economic and military aid, to prevent their falling into the Soviet sphere. The Doctrine shifted American foreign policy in regard to the Soviet Union from détente to, as George F. Kennan phrased it, a policy of containment of Soviet expansion. Historians often use the announcement of the doctrine to mark the starting date of the Cold War. Aid was agreed by the United States government to be given to both Greece and Turkey.” (New World Encyclopedia)

The Vietnam War was a long, costly and divisive conflict that pitted the communist government of North Vietnam against South Vietnam and its principal ally, the United States. The conflict was intensified by the ongoing Cold War between the United States and the Soviet Union. More than 3 million people (including over 58,000 Americans) were killed in the Vietnam War, and more than half of the dead were Vietnamese civilians.  https://www.history.com/topics/vietnam-war/vietnam-war-history#:~:text=The%20Vietnam%20War%20was%20a,States%20and%20the%20Soviet%20Union. ( History.com)

On October 4, 1957, the USSR launched Sputnik, the first artificial satellite to orbit Earth. The satellite, an 85-kilogram (187-pound) metal sphere the size of a basketball, was launched on a huge rocket and orbited Earth at 29,000 kilometers per hour (18,000 miles per hour) for three months. When it finally fell out of orbit in January 1958, Sputnik had traveled 70 million kilometers (43.5 million miles) around the planet. The only cargo onboard Sputnik was a low-power radio transmitter, which broadcast a beeping noise at regular intervals. This beeping could be heard by radio listeners around the world. 

https://education.nationalgeographic.org/resource/ussr-launches-sputnik (National Geographic)

https://www.history.com/this-day-in-history/the-bay-of-pigs-invasion-begins#:~:text=The%20Bay%20of%20Pigs%20invasion%20begins%20when%20a%
( History.com)

The Berlin Wall was a barrier that divided Germany from 1961 to 1989. Constructed by the German Democratic Republic (GDR, East Germany) starting on August 13, 1961, the Wall completely cut off West Berlin from surrounding East Germany and from East Berlin until government officials opened it in November 1989.  https://courses.lumenlearning.com/suny-hccc-worldhistory2/chapter/the-building-of-the-berlin-wall/#:~:text=Overview-,The%20Berlin%20Wall%20was%20a%20barrier%20that%20divided%20Germany%20from,opened%20it%20in%20November%201989.

(Courses.lumenlearning.com) 

During the Cuban Missile Crisis, leaders of the U.S. and the Soviet Union engaged in a tense, 13-day political and military standoff in October 1962 over the installation of nuclear-armed Soviet missiles on Cuba, just 90 miles from U.S. shores.In a TV address on October 22, 1962, President John F. Kennedy (1917-63) notified Americans about the presence of the missiles, explained his decision to enact a naval blockade around Cuba and made it clear the U.S. was prepared to use military force if necessary to neutralize this perceived threat to national security. Following this news, many people feared the world was on the brink of nuclear war. However, disaster was avoided when the U.S. agreed to Soviet leader Nikita Khrushchev’s (1894-1971) offer to remove the Cuban missiles in exchange for the U.S. promising not to invade Cuba. Kennedy also secretly agreed to remove U.S. missiles from Turkey. https://www.history.com/topics/cold-war/cuban-missile-crisis#:~:text=During%20the%20Cuban%20Missile%20Crisis,90%20miles%20from%20U.S.%20shores. (History.com)

(Britannica.com)

https://www.history.com/topics/cold-war/berlin-wall