6. The French Empire
Believe it or not, French Empire (1534-1980) has caused the deaths of 10 million people on the territories of Asia, Africa, Europe and the Americas. French Empire was one of the most evil countries of all time during Napoleon, when he invaded Haiti. He forced slaves to collect sugar and in order to stop them from eating sugar canes he ordered to put muzzles on them. Napoleon also used to let dogs ripped slaves in order to terrify the slaves in revolt.