Final answer:
The event that led to Richard Nixon's resignation was the Watergate Scandal.
Step-by-step explanation:
The event that led to Richard Nixon's resignation was the Watergate Scandal.
The Watergate Scandal was a political scandal that occurred in the 1970s, involving the break-in at the Democratic National Committee (DNC) headquarters at the Watergate office complex in Washington, D.C.
The scandal ultimately led to Nixon's resignation as President of the United States in 1974 in order to avoid impeachment.
Learn more about Watergate Scandal