and Takamiya (高宮郡) Districts, Hiroshima (Merged to form Asa District) March 16, 1899 Ōuchi (大内郡) and Sangawa (寒川郡) Districts, Kagawa (Merged to form Ōkawa District) March 16, 1899 Miki (三木郡) and Yamada (山田郡) Districts, Kagawa (Merged to form Kita District) March 16, 1899 Aya (阿野郡) and Uta (鵜足郡) Districts, Kagawa (Merged to form Ayauta District) March 16, 1899 Naka (那珂郡) and Tado (多度郡) Districts, Kagawa (Merged to form Nakatado District) March 16, 1899 Mino (三野郡) and Toyota (豊田郡) Districts, Kagawa (Merged to form Mitoyo District) April 1, 1900 Mashima (真島郡), and Ōba (大庭郡) Districts, Okayama (Merged to form Maniwa District) April 1, 1900 Saisaijō (西西条郡), Saihokujō (西北条郡), Tōnanjō (東南条郡), and Tōhokujō (東北条郡) Districts, Okayama (Merged to form Tomata District) April 1, 1900 Shōboku (勝北郡) and Shōnan (勝南郡) Districts, Okayama (Merged to form Katsuta District) April 1, 1900 Yoshino District (吉野郡), Okayama (Merged into Aida District) April 1, 1900 Kumehokujō (久米北条郡) and Kumenanjō (久米南条郡), Okayama (Merged to form Kume District) April 1, 1900 Mino (御野郡) and Tsudaka (津高郡) Districts, Okayama (Merged to form Mitsu District) April 1, 1900 Akasaka (赤坂郡) and Iwanashi (磐梨郡) Districts, Okayama (Merged to form Akaiwa District) April 1, 1900 Tsuu (都宇郡) and Kuboya (窪屋郡) Districts, Okayama (Merged to form Tsukubo District) April 1, 1900 Kayō (賀陽郡) and Shimotsu (下道郡) Districts, Okayama (Merged to form Kibi District) April 1, 1900 Tetta (哲多郡) and Aga (阿賀郡) Districts, Okayama (Merged to form Atetsu District) April 1, 1906 Tōbui District (当縁郡), Hokkaido (The villages of Taiki (大樹村), Berufune (歴舟村), and parts of Tōbui (当縁村) merged with other villages to form the village of Moyori (茂寄村) in Hiroo District; parts of the village of Tōbui merged with other villages to form the village of Ōtsu (大津村) in Tokachi District) 1912~1926 April 4, 1913 Kaitō (海東郡) and Kaisai (海西郡), Aichi (Merged to form Ama District) February 1, 1918 Muroran District (室蘭郡), Hokkaido (The town of Muroran and the villages of Wanishi, Chimaibetsu, and Motomuroran merged to form the borough (-ku) of Muroran (now the city of Muroran)) April 1923 Furebetsu District (振別郡), Hokkaido (The village of Furebetsu (振別村) merged with other villages to form the village of Rubetsu in Etorofu) April 1, 1925 Higashinari District (東成郡), Osaka (Merged into the city of Osaka) April 1, 1925 Nishinari District (西成郡), Osaka (Merged into the city of Osaka) 1927~1945 April 1, 1931 Kii District (紀伊郡), Kyoto (The villages of Kamitoba, Kisshōin, Fukakusa, Shimotoba, Yokoōji, Nōso,