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26th president
President William McKinley assassinated, Vice President Roosevelt becomes the 26th president -
world war 1
Germany's resumption of submarine attacks on passenger and merchant ships in 1917 became the primary motivation behind Wilson's decision to lead the United States into World War I. -
Ku Klux Klan
the first organized terror movement in US history -
empire state
the empire state building begins construction -
world war 2
the biggest and deadliest war in history, involving more than 30 countries. -
The Holocost
The systematic genocide during world war 2 resulting in the persecution and extermination of the jews -
the first atomic bomb
The uranium bomb detonated over Hiroshima on 6 August 1945 had an explosive yield equal to 15,000 tonnes of TNT. It razed and burnt around 70 per cent of all buildings and caused an estimated 140,000 deaths by the end of 1945, along with increased rates of cancer and chronic disease among the survivors. -
korean war
a conflict between north korea supported by china and the soviet unuion and south korea supported primarily by th united stated and united nations -
Double Helix
The discovery of the structure of DNA in 1953 was made possible by Dr Rosalind Franklin's X-ray diffraction work at King's. Her creation of the famous Photo 51 demonstrated the double-helix structure of deoxyribonucleic acid: the molecule containing the genetic instructions for the development of all living organisms. -
JFK
The car turned off Main Street at Dealey Plaza around 12:30 p.m. As it was passing the Texas School Book Depository, gunfire suddenly reverberated in the plaza. Bullets struck the president's neck and head and he slumped over toward Mrs. Kennedy. -
vietnam war
Having rebuilt their forces and upgraded their logistics system, North Vietnamese forces triggered a major offensive in the Central Highlands in March 1975. On April 30, 1975, NVA tanks rolled through the gate of the Presidential Palace in Saigon, effectively ending the war. -
first women in space
When she blasted off aboard the space shuttle Challenger on June 18, 1983, she became the first American woman—and, at 32, the youngest American—in space. -
27th amendment
No law, varying the compensation for the services of the Senators and Representatives, shall take effect, until an election of Representatives shall have intervened.