The U.S. Supreme Court ruled that Nixon had to release the Oval Office tapes to government investigators. ... The House Judiciary Committee then approved articles of impeachment against Nixon for obstruction of justice, abuse of power, and contempt of Congress.
To my knowledge if he had a reason to resign at that time, he knew he was guilt and he would get what was coming to him...
France first attempted to build the canal in the 1870s. He left quite a few diseases and financial problems behind. Ferdinand de Lessups was the engineer who designed the Suez Canal.