Czechs, (chĕks) are the most westerly branch of the great Slavic family of nations. In the latter half of the 5th century A. D. the Czechs migrated from their lands in Carpathia, on the upper Vistula, to the country now known as Bohemia. Here, in Moravia and in other parts of Austria the Czechs now number in all some 7,000,000.