However, Mizuno Katsunari, the grandson of Tadamasa was allowed to return to the clan's ancestral territories by Ieyasu after the Battle of Sekigahara as daimyō of Kariya Domain, a feudal han under the Tokugawa shogunate.After the Meiji Restoration, Kariya Town was created within Hekikai District, Aichi Prefecture with the establishment of the modern municipalities system on October 1, 1889.The town prospered as a center for commerce, sake production, sericulture and ceramics due to its location on the main railway routes.Control of the Yosami Transmitting Station was returned to Japan from the United States Navy in 1994, and the former facility is now a city park.Kariya has a mayor-council form of government with a directly elected mayor and a unicameral city legislature of 28 members.