In Brazil, the 12 aldeamentos were made frequently, to have a bigger protection and amount of hand of immediate workmanship, however, this form of exploration of the work indian still caused bigger indices debaixa demographic, therefore the indians were vulnerable the illnesses brought for ' ' man branco' ' , making with that the Portuguese to the few diminussemo aboriginal work for a process of insertion of the hand of enslaved workmanship negraque was explored since the beginning of century XIV in the Celta of Africa. This entradada hand of black workmanship in mass also was caused by the benefit of of the microbiana union of the completed world pelosDescobrimentos constituted a restrictive factor to the extension of the cativeiroindgena and, inversely, it facilitated the increment of the black slavery. 13 the Portuguese possuam the thought to continue naexplorao of the indians, however, for the entrance each bigger time of Europeans and comeles of some infectious agents, causes an aboriginal demographic fall, being in such a way expensive to keep this hand of workmanship in decay, therefore asexpedies of bandeirantes and of proper indians for the capture of outrosndios were even dispendioso, then, if it had many deaths in the osinvestimentos aldeamentos would give damages that the Portuguese crown did not want more to suffer. This optics agrees to Stefan Wedge to> . Adiminuio of the aboriginal population was one of the reasons for the introduction deescravos African. Social and cultural consequences of the Epidemics for aboriginal ospovos to be able to understand the effect of the waves epidemiolgicaspara the peoples autctones we must before think as it would be the routine of these homensantes of the arrival of the Europeans in 1492. In general, we have a great diversity of tribes, then, errante to speak of aboriginal peoples with a homogeneity, however, without a doubt, exactly existing many aboriginal habits and cultures, can imagine as asrotinas existing in America brusquely they had been modified with the arrival of European vriasmonarquias in America.