Hi, I'm John Green, this is Crash Course World History, and today we're going to talk about a relationship. No, not you, college girlfriend. No, not that kind of relationship either. No, Stan, this is a history class! We're going to talk about the relationship between a city, Venice, and an empire, the Ottomans. And in doing so, we're going to return to an old theme here on Crash Course World History, how studying history can make you a better boyfriend and or girlfriend. Probably or, but I'm not here to judge.