Yes They Did
The 70s.
the president serve for four years in the united states.
No, that is not a requirement.
4
44 presidents but not all of them serve their term
If they do not get nomination of their party it is impossible for them to serve.
State which one(s)
no
Presidents can only serve for 2 terms. 4 years are in a term.
Presidential Cabinet Members usually serve for a single administration. There is no law declaring term limits on members but they serve at the Presidents discretion or in other words they serve at the pleasure of the President. He decides who and for how long a cabinet member serves after Senatorial Conformation of course.
George W. Bush and John Q. Adams did not serve as vice presidents. Note, George H. W. Bush and John Adams did serve as vice presidents.
An American president can serve two 4 year terms. Presidents in other countries have varying terms.