Csallóköz: a distinct region of the Kisalföld (qq.v.), the largest island of the Danube lying on the northwestern borders of Hungary. It has a predominantly Hungarian-speaking population; after the First World War, it became a part of what was then Czechoslovakia; today, it is a part of Slovakia. Characterized by state-of-the-art agricultural methods (in market gardening, wheat growing, and animal husbandry alike), and a peasantry who made the most of the proximity of the markets of Vienna and Bratislava, the region was known for its highly-developed middle-class peasant culture.