Sahel Region: The transitional zone between the Sahara desert in North Africa and more fertile regions in South; often affected by droughts and food shortages.
Bantu Migration: A series of migrations across Sub-Saharan Africa by Bantu-speaking peoples from 3000 BC to present times; spread Bantu languages throughout these regions.
Colonialism/Imperialism in Africa: Period during 19th and early 20th centuries when European powers established colonies in Africa, significantly impacting its political, social, and economic structures.