Why did the release of the presidential tapes cause President Nixon to resign?

The release of the presidential tapes caused President Nixon to resign because it revealed his involvement in the Watergate scandal. The tapes showed that Nixon and his top advisers were engaged in illegal activity, such as obstruction of justice and trying to cover up the Watergate burglary. This evidence was too incriminating to ignore, so Nixon chose to resign before he could be impeached. The tapes provided the necessary proof to force Nixon to leave office and end his presidency.