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Scarcity
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Interdependence
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West Africa

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Scarcity Problems like resources being limited or needs and wants are unlimited.
Interdependence Because we live on one planet and cannot satisfy all of our own needs, we depend on others for mutually beneficial solutions to common problems
Silent barter A process in which people exchange goods without contacting each other directly.
Sahara A large, hot desert in North Africa that covers about 3.5 million square miles
Sahel A zone of semi desert, south of the Sahara, where short grasses, small bushes, and a few trees grow
Savanna A vegetation zone of tall grasses and scattered trees, with a long rainy season
Niger River The longest river in West Africa, and a kind of trading highway in early times
Created by: user-1854234
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