what happen in June of 72 that led to the political crime of the century? Why did these man do this?

The Watergate Scandal

Explanation:

The Watergate scandal was a political scandal in the United States involving the administration of U. S. President Richard Nixon from 1972 to 1974 that led to Nixon's resignation. The name "Watergate" comes from the hotel in Washington, D. C. where the first crime took place and is often associated with political scandals. He was stealing information and abusing his presidential power to try to stay in office.