P741:1, 66:0.1 The advent of a Lanonandek Son on an average world signifies that will, the ability to choose the path of eternal survival, has developed in the mind of primitive man. But on Urantia the Planetary Prince arrived almost half a million years after the appearance of human will.
P741:2, 66:0.2 About five hundred thousand years ago and concurrent with the appearance of the six colored or Sangik races, Caligastia, the Planetary Prince, arrived on Urantia. There were almost one-half billion primitive human beings on earth at the time of the Prince's arrival, and they were well scattered over Europe, Asia, and Africa. The Prince's headquarters, established in Mesopotamia, was at about the center of world population.