Middle eastern muslims first established trade contacts with bantu villages on the east african coast when what movement took place in arabia, c. 700?

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.

answer; /// the above statement is (true);

answer; not notated (at least, not in the traditional sense) and includes many improvised sections and solos;