24 great floods.  Discovered by white races ca. A.D. 1000.  Extensive fertile open hunting area.  Future determined by quality of racial factors permitted to enter.  Geology.  Greenland once connected North America to Europe.  Horses and camels on plains in Miocene.  Oceans provide favorable opportunity for unmolested development.  Red race in.  Rich in marine-life fossils.  Rose out of Pacific depths.  Slow westward drift.  Yellow race drove red race from Asia to.