ngemva kweminyaka engaphezu kwelitjhumi yokutlhayela kwegezi, siyezwakala isililo samasewula afrika, ngokunjalo kuyezwakala nokusilingeka kwawo.

emva kwesikhathi esingaphezu kweshumi leminyaka lokungabi nogesi, abantu baseningizimu afrika banelungelo lokuzizwa bediniwe futhi begane unwabu.
