500
Mark has to be able to recall the following information about the Cuban Missile Crisis for his upcoming history exam:
January 1, 1959: Fidel Castro assumes power after the Cuban Revolution
April 17, 1961: "The Bay of Pigs"
October 27, 1962: An American U-2 is shot down over Cuba killing the pilot, Major Rudolf Anderson
October 28, 1962: Cuban Missile Crisis ends
He makes a Time Line to help him study. This is what it looked like, and how he studied it.
What is draw a horizontal line and mark the dates in chronological order, along with what occurred on each date. To study, cover up everything but the date and attempt to "fill in" what happened.