September 11, 2001: Four American airliners are hijacked by hijackers. Two of them crash into the towers of the World Trade Center, which collapse. The third crashed into the Pentagon and the fourth crashed into the ground.
1973: The Chilean military led by General Pinochet overthrow by force the government of Salvador Allende, with the support of CIA.
1802: Napoleon annexed the rich region of Turin, the Piedmont, to France based on a referendum dating back to 1799.