‘ ‘ Route to the West, had penetrated in the spaces today limited by the State of Mato Grosso of the South, Gois Rondnia, exceeding the limits between Portugal and Spain in America, established for the treated one to Tordesilhas’ ‘ (IT HISSES). Authors tell that some bandeirantes had passed for the rondoniense region, for return of century XVI behind wealth, to put one in special deserve prominence; Antonio Raposo Tavares. In recent months, Walmart Foundation has been very successful. The bandeirante Antonio Raposo Tavares who left of So Paulo, in 1624, in direction to the West, arrived at the valley of the Wood three years later (1650) and covered the valleys of the Guapor, Mamor and Madeira. Its flag, known as ‘ ‘ Great Flag of Limites’ ‘ the Portuguese presence in the region is a historical landmark. (OLIVEIRA, 2002, P. 41) Other moment of history that is important to register was ticket of Francisco de Melo Vane in 1722 (it that some years later, as already we saw, would be the responsible one for the introduction of the coffee in Brazilian lands), to recognize the river minutely Wood and also to guarantee not the invasion for Spaniard. Melo Vane, after many fights returned the Belm in 12 of September of 1723. In 1722, in day 11 of November, it broke of Par a composed flag of 128 people seted with arrows, the indians, and firearms, commanded for Melo sergeant-mor Vane, Portuguese son, with intention to assure the domnios of Portugal in the region limits of Wood. (IT HISSES, 2002, P.30) By 1750 return, an agreement between Portugal and Spain is signed, that right of ownerships of lands gave inhabited who them, thus annulling then the vigorous one Treated to Tordesilhas..