Pepsi, 1915
In 1893, American pharmacist, Caleb Bradham developed a drink at his drugstore that would aid in digestion. He named it “Brad’s Drink”. 5 years later, however, he changed the name to Pepsi-Cola after the Greek word for digestion that sounded like “Pepsi” and “cola” after the kola nut. By 1904, the sales of the drink had increased to 19,848 gallons a year.
That's correct.
It also became a soft drink by accident. One day someone walked into Jacobs Pharmacy with a headache and needed a bottle. It was originally intended to be mixed with water before drinking. He didn't want to wait to get home and asked for it to be mixed at the soda fountain there in the drugstore. The tap was down at the other end of the counter, so the man behind the counter just mixed it with soda water. The result is what we know today.
More trivia: In Chinese, "Coca cola" translates to "Bite the wax tadpole."