Georgia - Coca Cola
Georgia is home to the Coca Cola headquarters. They even have a museum! While RC Cola might also have a base in Georgia, it's 100% Coke territory.
Longstanding Classic
Coca Cola is by far an American classic, with several variants just like Pepsi. With flavors like Diet, Cherry, and Vanilla, it's one of Pepsi's leading competitors. Often times, restaurants will only carry one or the other.