Bill Clinton and George W. Bush are the first US Presidents since James Madison and James Monroe to do what?

Question

I know the answer--do you? These four Presidents are the only four on the list of Presidents who have done this, in fact.

Answer 1

to serve two terms

Answer 2

Been Stupider than paris hilton?

Answer 3

be presidents at the beginning of a new century?

Answer 4

Serve consecutive complete 2 term presidencies