D. faced impeachment for his part in the Watergate scandal,
Explanation:
Nixon was suspected of tampering with the election through a scandal known as watergate. In this scandal, someone broke into Nixon's opponent's office. Eventually, Nixon was tied to this crime and faced impeachment from congress. Additionally, he also lost the trust of voters. So, instead of being convicted and forced out of the white house, he resigned, being the first and only president to resign in office.
The fact that the constitution gave too much power to the federal government, and that the rights of the people were not guaranteed in the bill of rights.
Answer: Three-Fifths Compromise: An agreement between Southern and Northern states that allowed a portion of the slave population to be counted for representation purposes regarding both distribution of taxes and apportionment of the members of the House of Representatives.