Social conflicts and negative impacts. It finishes it phase called Incognito of Heartland (1985.) that it is characterized for two distinct processes: First an exhaustion of the national desenvolvimentalista inaugurated in the Age Vargas with the State in the intervention of study in the economy. Whose great project was the Gutter North. On the other hand in this exactly year (1985) has beginning the creation of the National Advice of the Seringueiros, symbolizing the resistance. The crisis of the State and the social resistance, more the international and national ambientalista pressure generates an tecno-ecological Vector (VTE) occupation of the Amazonian territory to possess two characteristics: first it occurred of linear form for the rivers and the roads, thanks to the public and private investments. In these areas of investments it occurred great impacts on the environment, therefore with them it had agrarian intensification of the forest fires and conflicts (concentration that does not exceed the 100 kilometers in each edge of the roads. Second it becomes related first. The adensamento of roads in the east of Par, and Maranho, Tocantins, Mato Grosso and Rondnia, composes, in one another scale, a great arc of povoamento that folloies the edge of the forest, exactly where if they had implanted the roads.
In these areas cerne of the regional economy is placed, the exception of the economy of enclaves represented by the ZFM and some mineral projects. Also it concentrates the greater there I number of focos of heat in the region great extensions of abandoned areas, corresponding about 15% of the total. This area was of great expansion of the border, where if it succeeded durantes decades, therefore in it the reproduction of the cycle of expansion of the cattle one was developed new spaces, expansion of the wood, deforestation, forest fire, this great arc town passed to be called ' ' Arc of fogo' ' , or ' ' of desmatamento' ' or ' ' of Degradas' Lands; '.