History.com: Why Did the Beatles Break Up?

The four Beatles; John Lennon, Paul McCartney, George Harrison and Ringo Starr; changed music forever in a relatively brief time span, bursting onto the scene in 1963 with "Please Please Me" and recording their last albums, "Let It Be" and "Abbey Road," in 1969. The foursome came together as teenagers and became superstars by their early 20s, sharing a unique set of experiences and, naturally, forming a unique set of rivalries and grievances. But why did the most influential band of the 20th century break up within seven years of releasing their first album? The answer is as complex as the relationships between the men themselves.