who killed him ?
According to the Warren Commission , Lee Harvey Oswald was the assassinator.
John F. Kennedy
President Johnson quickly issued an executive order to create the Warren Commission—chaired by Chief Justice Earl Warren—to investigate the assassination. The commission concluded that Oswald acted alone in killing Kennedy and that Oswald was not part of any conspiracy. 
kennedy not because it is easy but because it is hard UNANSWERABLE what is this ? "We choose to go to the Moon", officially titled as the Address at Rice University on the Nation's Space Effort, is a speech. who delivered the speech ? John F. Kennedy. when was it delivered ? 12 September 1962. how was the speech received ? Paul Burka, the executive editor of "Texas Monthly" magazine states that the speech "speaks to the way Americans viewed the future in those days. It is a great speech, one that encapsulates all of recorded history and seeks to set it in the history of our own time. Unlike today’s politicians, Kennedy spoke to our best impulses as a nation, not our worst." what legacy did it leave behind ? The successful Apollo 11 Moon landing remains an enduring legacy of Kennedy's speech. when was it delivered ? 12 September,1962. what was the background for delivering such speech ? Kennedy was convinced  of the political need for an achievement which would decisively demonstrate America's space superiority. So he asked Lyndon B. Johnson to investigate whether the United States could beat the Soviet Union in putting a laboratory in space, or orbiting a man around the Moon, or landing a man on the Moon, and to find out what such a project would cost. who was this person who delivered the speech ? President of the United States. where was he born ? Brookline, Massachusetts. which educational institutions he attended ? Edward Devotion School, the Noble and Greenough Lower School, the Dexter School, the Riverdale Country School, the Canterbury School, Choate, and the Harvard University. who was he married it ? Jacqueline Lee "Jackie" Bouvier. didi he have any affair ? Inga Arvad , Gene Tierney, Marilyn Monroe, Gunilla von Post, Judith Campbell, Mary Pinchot Meyer, Marlene Dietrich, Mimi Alford, and Pamela Turnure. any awards won by him ? The Navy and Marine Corps Medal , and the Purple Heart. when was elected as the president ? He was sworn in as the 35th president at noon on January 20, 1961. how was he killed ? He was shot once in the back, the bullet exiting via his throat, and once in the head.
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John F. Kennedy [SEP] Assassination
In 1979 the U.S. House Select Committee on Assassinations concluded that it believed "that Kennedy was probably assassinated as a result of a conspiracy. The committee was unable to identify the other gunmen or the extent of the conspiracy." In 2002 historian Carl M. Brauer concluded that the public's "fascination with the assassination may indicate a psychological denial of Kennedy's death, a mass wish ... to undo it".