In the 1600s, European travellers noticed that East African people smoked it employing coconut-based drinking water pipes (Comoros) and antler-dependent pipes in Madagascar. A Portuguese account in the 1580s stories the usage of ‘bangue’ in the region, which can be believed to relate on the area term for cannabis – https://sergiotppsr.activosblog.com/36049009/detailed-notes-on-zanzibar-cannabis