 The name , consisting of "chū" (middle) + "kyō" (capital) is also used to refer to Nagoya.Notable examples of the use of the name Chūkyō include the Chūkyō Industrial Area, Chūkyō Metropolitan Area, Chūkyō Television Broadcasting, Chukyo University and the Chukyo Racecourse.Oda Nobunaga and his protégés Toyotomi Hideyoshi and Tokugawa Ieyasu were powerful warlords based in the Nagoya area who gradually succeeded in unifying Japan.