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"Famously known as the navigator who "Discovered" America while trying to find a back door into the lucrative spicy goodness of Asia. Only he didn't discover it, as there were already people there, and it had already been visited by several other groups of varying nationalities. He's also hailed as the man who proved the earth was round, only this fact had been known for hundreds of years already.
So what was Columbus? He was a slave trader, a tyrant, an incompetent moron with a penchant for putting hundreds of sailor's lives at risk, and most of all, a collosal ass."
http://www.cracked.com/funny-6223-5-great-men-in-history-who-were-complete-assholes./