I could pick out more than 3 historic events that have happened in my lifetime. For instance the murder of Martin Luther King but I can only pick three....

The three most significant events that have happened in my lifetime are: John Kennedy's assassination, Robert Kennedy's assassination, and the Twin Towers at the World Trade Center being hit by two airplanes flown by Alquaida members. All were frightening events that changed the way I though about the world.