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la prehistoria, neolitico, pinturas rupestres, fuego, intercambio de todos los productos, ganaderia, n�madas, hierro, agricultura, comercio, rueda, remo, primeros poblados, oro, recolectores, en la naturaleza, edad de piedra, utensilios eran de piedra, sedenterios, paleolitico, eva y brenda 14-05-04 la prehistoria, prehistoria, plata, utensilios eran de metal, cazadores, edad de los metales, bronce