Cannabis has a truly global history associated with a wide range of uses and meanings. The plant evolved in central Asia millions of years ago. Across Eurasia, humans began using cannabis seeds and fibre more than 12,000 years ago, and by 5,000 years ago, people in south Asia had learned to use cannabis as an edible drug. It arrived in east Africa over 1,000 years ago.
Not even an indigenous plant.
To be noted though is the fact that both Klipdagga and Wilde dagga have hallucinatory properties and presumably have been used as such for a long time by Africans.