Caffeine was first isolated from coffee in 1821. Coffee originally came from a native plant in Ethiopia and in the fourth century AD was introduced to Arabia and the rest of the East. 
Ethiopian nomads noticed that their domestic animals became more energetic after eating the fruits of the trees.
These nomads discovered that they also felt energised after eating the seeds and began to make a drink by roasting the beans.
Coffee has been used in religious ceremonies and rituals, where groups of men would drink excessive amounts and stay up all night praying and chanting.
In 1573 coffee was introduced to Europe. Authorities tried to ban it as a new and unapproved drug, but were unsuccessful. The coffee plant is now cultivated in many tropical countries.
Tea was first introduced to England in 1657. Switzerland made the first milk chocolate bar in 1876, and cola-drinks began to appear at the end of the 19th century.