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Civil War/Reconstruction
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The Gilded Age
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The Progressive Era
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Imperialism
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Works War I
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Rosenbergs trial
Julius Rosenberg and Ethel Rosenberg were American citizens who were convicted of spying on behalf of the Soviet Union. -
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Roaring Twenties
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The Union of Soviet Socialist Republics
Comprising a confederation of Russia, Belorussia, Ukraine, and the Transcaucasian Federation (divided in 1936 into the Georgian, Azerbaijan, and Armenian republics). -
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Great Depression
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World War II
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Early Cold War
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United Nations formed
an intergovernmental organization that aims to maintain international peace and security, develop friendly relations among nations, achieve international cooperation, and be a centre for harmonizing the actions of nations. -
Containment
a foreign policy strategy followed by the United States during the Cold War. First laid out by George F. Kennan also the policy stated that communism needed to be contained and isolated, or else it would spread to neighboring countries. -
Truman Doctrine
U.S. policy that gave military and economic aid to countries threatened by communism. -
Marshall Plan
program to help European countries rebuild after World War II -
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Berlin Airlift
The Berlin Blockade was one of the first major international crises of the Cold War. During the multinational occupation of post–World War II Germany, the Soviet Union blocked the Western Allies' railway, road, and canal access to the sectors of Berlin under Western control -
NATO established
The North Atlantic Treaty Organization, also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 European and North American countries. -
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Civil rights Era
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Domino Theory
a theory prominent in the United States from the 1950s to the 1980s that posited that if one country in a region came under the influence of communism, then the surrounding countries would follow in a domino effect -
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Korean War
The Korean War was a war between North Korea and South Korea. The war began on 25 June 1950 when North Korea invaded South Korea following clashes along the border and insurrections in the south. -
22nd Amendment
prohibits anyone who has been elected president twice from being elected again -
First H-Bomb detonated by the United States
the U.S. detonated the first hydrogen bomb, resulting in the first successful full-scale thermonuclear weapon explosion -
Jonas Salk invents the Polio Vaccine
American medical researcher Dr. Jonas Salk announces on a national radio show that he has successfully tested a vaccine against poliomyelitis, the virus that causes the crippling disease of polio. -
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Vietnam WAR
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Arms Race/Space Race
An informal 20th-century competition between two Cold War rivals, the Soviet Union (USSR) and the United States (US), to achieve firsts in spaceflight capability. It had its origins in the ballistic missile-based nuclear arms race between the two nations following World War II. -
USSR launches Sputnik
the Soviet Union launched the earth's first artificial satellite, Sputnik I. The successful launch came as a shock to experts and citizens in the United States, who had hoped that the United States would accomplish this scientific advancement first. -
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End of the Cold War
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1990s-21st Century
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Communism
In Russia, efforts to build communism began after Tsar Nicholas II lost his power during the February Revolution