During the 1600s, European travellers observed that East African folks smoked it applying coconut-based drinking water pipes (Comoros) and antler-based pipes in Madagascar. A Portuguese account in the 1580s experiences the usage of ‘bangue’ in the region, which is considered to relate to your nearby expression for cannabis – bhang. https://elliottgijlp.wikicorrespondent.com/6580615/the_single_best_strategy_to_use_for_zanzibar_cannabis