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West Africa
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| Question | Answer |
|---|---|
| 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 |