For the flightless bird species, see
Megapode. For the Tahitian queen, see
Queen Marau. For the similarly named municipality in the state of Bahia in the North-East region of Brazil, see
Maraú.
The city name is based on the brave native chief "cacique Marau" which fought against the white people to keep the land. He lost the battle in 1840 and it generated a river called Mortandande after the bloody battle.
The economy is based on agriculture and industry.