The cycle of the gold is initiated then and with it the fever of the gold, that mainly influenced a migration for the interior of the Generalities provoking a grandedespovoamento in the first colonial nuclei and in the dasprovncias capitals of the hinterland northeastern and the sugar coast, in few years regiesdesertas if they had transformed into more densely populated area of the Amricasconcentrando about 300 a thousand inhabitants for 1750 return. With this bigger movement and the withdrawal of the gold, and atmesmo for the supplying of these regions a way of transport was necessary, knows then that in this period the ways of transport were not part dapauta of the colonizadores, therefore, the first commercial nuclei and extraviastesestavam intent in places of easy access, generally next to litorale to the exportation ports, initially to decide the problem in transportefoi used the desumano and rudimentary in such a way denegros use of enslaved man power as of indians, thus valuing the cost of these slaves and enriquecendotanto the person who trades slaveses how much the natives of So Paulo that they made I traffic of the blacks of the land,that is the indians, and the enriched slaves were obliged to load of everything desdedonzelas until among others material ingots of iron. With ocrescimento of the mineradora activity, the human element (indian and black), noconseguiu, but to take care of the demand of transport imposed for the economy deexportao, a time that stops this end needed to be excused a grandequantidade of slaves, one for the work in the mines and others for otransporte this if it became impracticable due to the high price of the slave in the market. For the substitution of the slave in the transport, muares was given it to alternative of the empregodos, that they were found in the fields of the south and that during very tempohavia been ignored, the commercialization of muar then if it intensifies and agoraentra in this scene the figure of the tropeiros, that had been if becoming osnegociantes that they afluam gradual in the region they would substitute osbandeirantes.