Réponse:
While John Pemberton served as a lieutenant of the Confederate Army , he suffered a major injury from a saber that slashed his chest. Like many Civil War's wounded veterans , he became addicted to morphine. At the end of the war , he went back to work a pharmacist . In the meantime , he desperately tried to find a cure to his addiction Therefore, he used coca leaves and cola nuts as a new treatment. However , his lab assistant accidently mixed the two ingredients with carbonated water, which Resulted in the world's first coke.