 
 <prompt> Wetin be di time period wey dem mention second to last? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context:

Di history book wey I dey read talk about ancient civilizations like di Egyptians, Greeks, and Romans. Dem yan about how dem build great empires and develop advanced technologies wey dey shock people for dat time. After dat, dem come mention di Middle Ages wey follow after di fall of di Roman Empire. For dis period, Europe dey experience plenty political instability and cultural changes as di feudal system dey take over. E be like say di people for dat time dey struggle to find balance between di power of di church and di authority of di kings. E no easy for dem at all. <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 happen across di desert. Dem estimate say from di 10th to 19th centuries about 6,000 to 7,000 slaves dey transported north every year. 