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Summary of book The first man arrival in America is thought to occurred by approximately 25000 BC. The first arrival were migrant hunters , of mongoloid race they entered the continent from Asia by crossing the Bering stairs .It is probable that ice blocked this passage during certain period and it is believed that was between 10000-23000BC,radiocarbon dates obtain that man occupied the Andean aria as early as 22000 years ago. The earliest migrant to the Andean Area filtered from north to south through the highlands and coastal regions. The Incas concentrated all their effort on unification and in over coming the Difficulties of the environment with bronze age technology. Physical appearance)Most of them have straight black hair ,little body hair Reddish-brown or yellowish-brown skin and dark brown or black eyes also Characteristic of all mongoloid babies is the blueish-purple mark just above And between the buttocks. Incas had adopted well to the highlands environment They had broad shoulders and deep