 
 <prompt> Wetin be di first group wey dem mention? Based on di question wey dey before dis one, write something wey get di answer inside. E fit be 1 - 20 sentences. Context: <response>: During di 16th and 17th centuries, slave traders begin dey raid di region as part of di expansion of di Saharan and Nile River slave routes. Dem dey capture people and sell dem as slaves wey dem dey carry go Mediterranean coast, Europe, Arabia, di Western Hemisphere, or to di slave ports and factories along di West and North Africa or South di Ubanqui and Congo rivers. For di mid 19th century, di Bobangi people come become major slave traders and dem dey sell their captives go Americas using di Ubangi river to reach di coast. During di 18th century, Bandia-Nzakara people establish di Bangassou Kingdom along di Ubangi River. 