People will always be people: some get along, and others—for numerous reasons—don't. While some disagreements and fights are temporary, others are not so much. In fact, some culminate in feuds lasting decades. These rivalries can indeed be very interesting (and entertaining at times). We've written about the most epic celebrity feuds of all time, and now it's time to travel back in time a bit more.
Click through the following gallery and discover the most famous feuds in history.