Maremma märām´mä [key], coastal area in Tuscany, central Italy, along the Tyrrhenian Sea and extending E to the Apennines. A flourishing region in Etruscan and early Roman times, it became marshy and was largely abandoned in the Middle Ages because of malaria. Reclamation was begun (19th cent.) by the grand dukes of Tuscany and was continued in the 20th cent. by the Italian government. There are now wide fertile areas, rich borax mines, and good hunting grounds; cattle and a noted breed of horses are raised. Cities include Piombino (a port) and Grosetto (an inland agricultural center).

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