-
-
-
-
-
-
-
-
-
-
The United Nations officially came into existence on 24 October 1945, when the Charter had been ratified by China, France, the Soviet Union, the United Kingdom, the United States and by a majority of other signatories.
-
-
U.S. policy that gave military and economic aid to countries threatened by communism
-
prohibits anyone whos been elected president twice from being elected again.
-
On June 26, 1948, the Berlin Airlift began with U.S. pilots and planes carrying the lion’s share of the burden. During the next 15 months, 277,264 aircraft landed in West Berlin bringing over 2 million tons of supplies. On September 30, 1949, the last plane–an American C-54–landed in Berlin and unloaded over two tons of coal.
-
U.S. policy that gave military and economic aid to countries threatened by communism
-
(NATO), military alliance established by the North Atlantic Treaty (also called the Washington Treaty) of April 4, 1949, which sought to create a counterweight to Soviet armies stationed in central and eastern Europe after World War II.
-
The Korean war began on June 25, 1950, when some 75,000 soldiers from the North Korean People’s Army poured across the 38th parallel, the boundary between the Soviet-backed Democratic People’s Republic of Korea to the north and the pro-Western Republic of Korea to the south. This invasion was the first military action of the Cold War.
-
-
The Rosenbergs vigorously protested their innocence, but after a brief trial that began on March 6, 1951, and attracted much media attention, the couple was convicted. On April 5, 1951, a judge sentenced them to death and the pair was taken to Sing Sing to await execution
-
The United States conducts the first airborne test of an improved hydrogen bomb, dropping it from a plane over the tiny island of Namu in the Bikini Atoll in the Pacific Ocean on May 20, 1956. The successful test indicated that hydrogen bombs were viable airborne weapons and that the arms race had taken another giant leap forward.
-
-
After preliminary tests on laboratory animals proved successful, Salk began testing his polio vaccine on children on July 2, 1952. In one of the largest medical tests in history, nearly 2 million young “polio pioneers” were injected with the vaccine over the next two years.
-
The launch of Sputnik 1 shocked many Americans, who had assumed that their country was technologically ahead of the Soviet Union, and led to the “space race” between the two countries. Sputnik 3 Launched May 15, 1958, by the Soviet Union, it made and transmitted measurements of the pressure and composition of Earth's upper atmosphere, the concentration of charged particles, and the influx of primary cosmic rays.
-
-
begins undeclared war in vietnam
-
-
-
defined the first amendment rights for students in the United States Public Schools.
-
-
-
-
moved the voting age to 21 years old to 18 years old.
-
law limited the presidents right to sedn troops to battle with out congressional approval.
-
-
-
-
-
-
-