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.
With a duration of only 45 minutes, it holds the record of being the shortest war in recorded history. The Royal Navy assembled five warships in the harbor in front of the palace. They opened fire on the palace at 9 am on 27 August 1896. The shelling stopped after 45 minutes.