Nordeste (Socio-Geographic Division)
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The socio-geographic division of Nordeste (A região geoeconômica do Nordeste) is the oldest populated and currently the second most populous area of Brazil (42,822,100 in 1990). Its area is approximately 1,542,271 km², made up of the official Northeast Region, minus the western half of Maranhão, but including the north of Minas Gerais - the Jequitinhonha Valley.
A major part of its territory is made of an extensive plateau, old and flattened by erosion. Due to different physical characteristics, the region can be divided into four sub-regions: meio-norte, zona da mata, agreste and sertão.
