The name of the event happened when Middle eastern muslins contacted the bantu villages for trade is called: arab slave trades.
Muslims made contact with the Bantu to negotiate slaves, at a time when many countries in Europe, and other countries including the Kingdom of Arabia, used slave labor. The African natives who were adherents of Islam could not be enslaved by the Muslims, as this would go against the principle that free Muslims could not be enslaved.
Sorry i don’t speak English
Answer: Harsh climate conditions that do not favor crop growth i.e a limited availability of rainfall (less than 250mm/year.)
Because they wanted to preserve them good, because they wanted the person who died to look good for the afterlife.
:D Hope IT Helped :D