ABCD Region

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ABCD, sometimes called ABC (ABC paulista or Região do Grande ABC in Portuguese) is an industrial region made up of seven municipalities with the greater metropolitan area of São Paulo, Brazil.The name "ABCD" is derived from the principal initials of four of these cities: Santo André (A), São Bernardo do Campo (B), São Caetano do Sul (C), and Diadema (D). The region also includes the cities of Mauá. Ribeirão Pires and Rio Grande da Serra.