sentences:  Beginning in 1835, several groups of Boers, together with large numbers of Khoikhoi and black servants, decided to trek off into the interior in search of greater independence.North and east of the Orange River (which formed the Cape Colony's frontier) these Boers or Voortrekkers ("Pioneers") found vast tracts of apparently uninhabited grazing lands.They had, it seemed, entered their promised land, with space enough for their cattle to graze and their culture of anti-urban independence to flourish.