Pre-Clovis WhendidpeoplefirstappearinNorthAmerica? Howdidtheygethere?/Wheredidtheycomefrom? Whatwastheirenvironmentandculturelike? LatePaleolithicMigrations Thelastlandstoinhabit:GlacialconditionsandMigrationtoNewFrontiers SumatraandBorneo before20,000B.P.connectedbylandbridgetoSEAsia ...