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Rio Grande do Sul, southernmost estado (state) of Brazil, bordered by the state of Santa Catarina (north), Argentina (west), Uruguay (south), and the Atlantic Ocean (east). The capital of Porto Alegre is the state’s main industrial area and port. Rio Grande do Sul is a major agricultural and livestock region. The region was originally thinly inhabited by TupĆ­-GuaranĆ­, Ge, and GuaycurĆŗ Indians. It was first explored and colonized by the Portuguese during the late 17th...