17. The great trade empires of West Africa grew out of the various vegetation zones and the products they produced. For example, yams were better suited to one area, grazing animals to another. How would these differences account for growth in trade? Analyzing Maps and Charts
18. People traded for things they desired but could not produce. Analyzing Maps and Charts
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20. Click the mouse button or press the Space Bar to display the answers. The author is unknown. Wisdom, or learning, cannot be purchased with money. It requires study. Some things or people never change. Crocodiles were native animals of West Africa.