was a district located in Gunma Prefecture, Japan. As of June 30, 2004, the district had an estimated population of 22,303. The total area was 93.59 km2. Until the day before the dissolution (September 30, 2006), the district had one town. Haruna History In 1878, the district split off at the Tone River, forming Higashigunma and Nishigunma Districts. Since Higashigunma District areas was smaller, Higashigunma merged with Minamiseta District in 1896 to form Seta District. At the same time, Nishigunma merged with Kataoka District and renamed to Gunma District. In 1949, Kitagunma District was created out from Gunma District. On October 1, 2006, the town of Haruna was merged into the expanded city of Takasaki. Therefore, Gunma District was dissolved as a result of this merger. District Timeline Gunma District ~1876 1876 - The District broke off into Higashigunma District and Nishigunma District. Gunma District 1896-2006 April 1, 1896 - Nishigunma District merged with Kataoka District to form Gunma District. (6 towns, 33 villages) April 1, 1900 - The town of Takasaki was elevated to city status. (5 towns, 33 villages) April 1, 1905 - The village of Murota was elevated to town status. (6 towns, 32 villages) April 1, 1921 - The village of Minowa was elevated to town status. (7 towns, 31 villages) April 1, 1927 - The villages of Tsukasawa and Kataoka was merged into the city of Takasaki. (7 towns, 29 villages) October 1, 1939 - The village of Sano merged into the city of Takasaki. (7 towns, 28 villages) October 1, 1949 - 2 towns and 9 villages were split from the district to form Kitagunma District. (5 towns, 19 villages) April 1, 1951 - The village of Rokugo was merged into the city of Takasaki. (5 towns, 18 villages) April 1, 1954 - The town of Soja and the villages of Azuma and Motosoja were merged into the city of Maebashi. (4 towns, 16 villages) January 20, 1955 (4 towns, 13 villages) The village of Kiyosato and parts of the village of Shintakao (the locality of Toba) were merged into the city of Maebashi. The village of Nakagawa and the remaining parts of the village of Shintakao were merged into the city of Takasaki. February 1, 1955 (4 towns, 13 villages) The town of Murota was merged with the village of Satomi from Usui District to create the town of Haruna. The village of