During the 1600s, European travellers observed that East African people today smoked it working with coconut-based mostly water pipes (Comoros) and antler-centered pipes in Madagascar. A Portuguese account with the 1580s studies the use of ‘bangue’ in the region, that's believed to relate into the regional term for cannabis – https://kylerauiuh.wikipresses.com/6155600/details_fiction_and_zanzibar_cannabis