 
 <prompt> Wetin be di first place wey dem mention? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: The Byzantine Empire bin dey rule di northern shores of di Sahara from di 5th to di 7th centuries. After di Muslim conquest of Arabia (Arabian peninsula) di Muslim conquest of North Africa begin for di mid-7th to early 8th centuries, Islamic influence expand quick-quick for di Sahara. By di end of 641 all of Egypt dey for Muslim hands. Di trade across di desert dey increase. A significant slave trade dey pass through di desert. Dem estimate say from di 10th to 19th centuries about 6,000 to 7,000 slaves dey transported north every year. 