Page:Democratic Ideals and Reality (1919).djvu/117

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THE LANDSMAN'S POINT OF VIEW
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Steppes were probably the original habitat of the horse, and in their southern parts of the two-humped camel (Fig. 18).
Fig. 17.—The Southern Heartland. =River falls. ← Lines of Arab invasion.

The Southern Heartland also has its wide open grasslands, which in the Sudan gradually