Originally marketed as a temperance drink and intended as a patent medicine, Coca-Cola was invented in the late 19th century by John Stith Pemberton in Atlanta, Georgia. In 1888, Pemberton sold the ownership rights to Asa Griggs Candler, a businessman, whose marketing tactics led Coca-Cola to its dominance of the global soft-drink market throughout the 20th and 21st century.The name refers to two of its original ingredients: coca leaves and kola nuts (a source of caffeine).The current formula of Coca-Cola remains a trade secret; however, a variety of reported recipes and experimental recreations have been published. The secrecy around the formula has been used by Coca-Cola in its marketing as only a handful of anonymous employees know the formula. The drink has inspired imitators and created a whole classification of soft drink: colas.