Definitions: Doraphobia is the fear of _________.?

Questions

Which president said in a Playboy interview, that he had 'committed adultery in my heart many times'?

How many states existed when George Washington took office?

Who was killed while watching the play 'Our American Cousin'?

Who was the only president to serve two non-consecutive terms in office?

Whose presidential competency was questioned when he insisted during a debate that there was no Soviet domination in Poland?