In 1893, Caleb Bradham first introduced Pepsi as "Brad's Drink" in North Carolina.
The soda was renamed in 1898 and--similarly to its rival, Coca-Cola (KO) - Get Coca-Cola Company (The) Report --earned part of its name from the coca leaf, which was a main ingredient in Pepsi. (Watch Share a Coke: A History of Coca-Cola)
In 1922 and 1933, Coca-Cola was offered the chance to buy Pepsi and it turned down the opportunity both times.
To learn more about the company's history, watch the video above.