Niigata Prefecture in the context of "Yamagata Prefecture"

Gunma Prefecture (群馬県, Gunma-ken; Japanese pronunciation: [ɡɯꜜm.ma, ɡɯm.maꜜ.keɴ]) is a landlocked prefecture of Japan located in the Kantō region of Honshu. Gunma Prefecture has a population of 1,937,626 (1 October 2019) and has a geographic area of 6,362 square kilometres (2,456 sq mi). Gunma Prefecture borders Niigata Prefecture and Fukushima Prefecture to the north, Nagano Prefecture to the southwest, Saitama Prefecture to the south, and Tochigi Prefecture to the east.

Maebashi is the capital and Takasaki is the largest city of Gunma Prefecture, with other major cities including Ōta, Isesaki, and Kiryū. Gunma Prefecture is one of only eight landlocked prefectures, located on the northwestern corner of the Kantō Plain with 14% of its total land being designated as natural parks.

The Chūbu region (中部地方, Chūbu-chihō), Central region, or Central Japan (中部日本, Chūbu-nihon) is a large and diverse region in the middle of Honshū, Japan's main island. In a wide, classical definition, it encompasses nine prefectures (ken): Aichi, Fukui, Gifu, Ishikawa, Nagano, Niigata, Shizuoka, Toyama, and Yamanashi.

It is located directly between the Kantō region and the Kansai region and includes the major city of Nagoya as well as Pacific Ocean and Sea of Japan coastlines, extensive mountain resorts, and Mount Fuji.

Daikan (代官) was an official in ancient Japan that acted on behalf of a ruling monarch or a lord at the post they had been appointed to. Since the Middle Ages, daikan were in charge of their territory and territorial tax collection. In the Edo period, daikan were local governors in charge of the government and security of domain and shogunate territories.

Fukushima Prefecture (福島県, Fukushima-ken; Japanese pronunciation: [ɸɯ̥.kɯꜜ.ɕi.ma, -kɯ.ɕi.maꜜ.keɴ]) is a prefecture of Japan located in the Tōhoku region of Honshu. Fukushima Prefecture has a population of 1,771,100 (as of 1 July 2023) and has a geographic area of 13,783.90 square kilometres (5,321.99 sq mi). Fukushima Prefecture borders Miyagi Prefecture and Yamagata Prefecture to the north, Niigata Prefecture to the west, Gunma Prefecture to the southwest, and Tochigi Prefecture and Ibaraki Prefecture to the south.

Fukushima is the capital and Iwaki is the largest city of Fukushima Prefecture, with other major cities including Kōriyama, Aizuwakamatsu, and Sukagawa. Fukushima Prefecture is located on Japan's eastern Pacific coast at the southernmost part of the Tōhoku region, and is home to Lake Inawashiro, the fourth-largest lake in Japan. Fukushima Prefecture is the third-largest prefecture of Japan (after Hokkaido and Iwate Prefecture) and divided by mountain ranges into the three regions of Aizu, Nakadōri, and Hamadōri.

Nagano Prefecture (長野県, Nagano-ken; Japanese pronunciation: [naꜜɡano, naɡanoꜜkeɴ]) is a landlocked prefecture of Japan located in the Chūbu region of Honshu. It has a population of 2,007,682 as of 1 July 2023 and a geographic area of 13,561.56 square kilometres (5,236.15 sq mi). It borders Niigata Prefecture to the north, Gunma Prefecture to the northeast, Saitama Prefecture to the east, Yamanashi Prefecture to the southeast, Shizuoka Prefecture and Aichi Prefecture to the south, and Gifu Prefecture and Toyama Prefecture to the west.

Nagano is the prefecture's capital and largest city, with other major cities including Matsumoto, Ueda, and Iida. The prefecture is known for its impressive highland areas of the Japanese Alps, including most of the Hida Mountains, Kiso Mountains, and Akaishi Mountains, which extend into neighbouring prefectures; it contains nine of the twelve highest mountains in Japan. Its mountain ranges, natural scenery, and history have gained the prefecture international recognition as a winter sports tourist destination, and it received further attention as the host of the 1998 Winter Olympics. It is served by the Hokuriku Shinkansen railway line with direct services to Tokyo, Toyama, and Kanazawa.

Toyama Prefecture (富山県, Toyama-ken; Japanese pronunciation: [toꜜ.ja.ma, to.ja.maꜜ.keɴ]) is a prefecture of Japan located in the Chūbu region of Honshu. Toyama Prefecture has a population of 993,848 (1 January 2025) and has a geographic area of 4,247.61 km (1,640.01 sq mi). Toyama Prefecture borders Ishikawa Prefecture to the west, Gifu Prefecture to the south, Nagano Prefecture to the east, and Niigata Prefecture to the northeast.

Toyama is the capital and largest city of Toyama Prefecture, with other major cities including Takaoka, Imizu, and Nanto. Toyama Prefecture is part of the historic Hokuriku region, and the majority of the prefecture's population lives on Toyama Bay, one of the largest bays in Japan. Toyama Prefecture is the leading industrial prefecture on the Japan Sea coast and has the advantage of cheap electricity from abundant hydroelectric resources. Toyama Prefecture contains the only known glaciers in East Asia outside of Russia, first recognized in 2012, and 30% of the prefecture's area is designated as national parks.

Agano (阿賀野市, Agano-shi) is a city located in Niigata Prefecture, Japan. As of 1 July 2019, the city had an estimated population of 41,204 in 14,417 households, and a population density of 214 persons per km. The total area of the city is 192.74 square kilometres (74.42 sq mi).

Kakuei Tanaka (田中 角栄, Tanaka Kakuei; IPA: [ta̠na̠ka̠ ka̠kɯ̟e̞ː]; 4 May 1918 – 16 December 1993) was a Japanese politician who served as prime minister of Japan from 1972 to 1974. Known for his background in construction and earthy and tenacious political style, Tanaka is the only modern Japanese prime minister who did not finish high school or graduate from a university.

Born in Niigata Prefecture to a poor farmer, Tanaka left school at age 14. He later received an engineering education and founded his own construction company in 1936. In 1940, he was drafted into the army and served in Manchuria until 1941; during the Pacific War, he made a fortune from government contracts. After the war, Tanaka was first elected to the National Diet in 1947. He joined the Liberal Democratic Party on its foundation in 1955, and held a series of cabinet positions, including posts and telecommunications minister from 1957 to 1958, finance minister from 1962 to 1965, and international trade and industry minister from 1971 to 1972. He built up a large faction in the party by political maneuvering and extensive use of money.

Itoigawa-Shizuoka Tectonic Line (ISTL) (糸魚川静岡構造線, Itoigawa Shizuoka Kōzō Sen), also Ito Shizu Sen (糸静線) is a major fault zone on Honshu island running from Itoigawa, Niigata Prefecture, through Lake Suwa, and on to Shizuoka in Shizuoka Prefecture. It is often confused with the Fossa Magna ("great rift"), a geological feature it forms the western boundary of.