text: It may be well to point out that the occupation of territory by Hamites did not necessarily involve especial hardships for the indigenous population. The latter were almost exclusively agriculturists who were cultivating the lowland regions where rainfall is more abundant; the invading Hamites, on the other hand, preferred highlands with a sufficient supply of grass for their cattle. Both types of economy supplemented each other rather well and were even beneficial to both aboriginals and invaders.  
  The second invasion of Hamites extended into the region east of Lake Victoria. This is the invasion of the so-called Niloto-Hamites, of which the Masai and Nandi are perhaps the best-known representatives. It is generally assumed that these people had their origin in regions of the Upper Nile and moved southward, perhaps in the twelfth or the thirteenth century. Like the Watussi, the Masai and their ethnic relatives conquered territories for their exclusive settlement, and as cattle breeders they were interested in such land as Negroes may have regarded as useless. It is very probable that much of the area now occupied by Masai and Nandi was formerly, as now, only very thinly populated. It would be wrong, however, to believe that these expansions proceeded without bloody struggles. If the few