George Washington
Chester Alan Arthur
No, he died of natural causes on 26 December 1972.
I don't know if it was 11 weeks, but the assassination of President Garfield in 1881 took months.
Andrew Johnson was the President when Andrew Johnson was. Andrew Johnson was the Vice President for Abraham Lincoln's short second term, ended by Lincoln's assassination.
to investigate the assassination of president John F Kennedy
Andrew Johnson was President Lincoln's Vice President during the second term. Hannibal Hamlin was the VP during the first term. Johnson became President following the assassination.
The duration of Assassination of a High School President is 1.55 hours.
No, East Timor is on it's second president, and also had 2 acting presidents when the present president was incapacitated due to assassination attempts.
No, only President Kennedy and Texas Governor Connally were shot.
No, it was just Lincoln. The rest in your question did not die from assassination. They instead died of natural causes.
The assassnation was on 2 July 1881 but he did not die until 19 September 1881.