Academic tenure was put in place in U.S. school systems in the first half of the 20th century to protect teachers from arbitrary punishment, but in the last several decades it has morphed into something else altogether.
More facts about short wars: 1  The second-shortest war in recorded history occurred during the 20th century. Launched on 5 June 1967, the Six Day War was the result of Egypt calling for Arab nations to take action against Israel after leaders in that nation made threats against the country of Syria.
Second Indochina War (Vietnam War). Nearly always referred to in America as the Vietnam War, and in Vietnam as the American War or the War Against the Americans to Save the Nation the conflict was the longest fought by the United States and was never declared by Congress.fter seven years of fighting against the Viet Minh, the French governance in Indochina ended shortly after the bloody battle of Dien Bien Phu in 1954 when, at the brink of surrender, they were unable to obtain U.S. reinforcements or additional military aid.