Prefecture in the context of "Subdivisions of the Central African Republic"

A political union is a type of political entity which is composed of, or created from, smaller polities or the process which achieves this. These smaller polities are usually called federated states and federal territories in a federal government; they are called prefectures, regions, or provinces in the case of a centralised government. This form of government may be created through voluntary and mutual cession and is described as unionism by its constituent members and proponents. In other cases, it may arise from political unification, characterised by coercion and conquest. The unification of separate states which, in the past, had together constituted a single entity is known as reunification. Unlike a personal union or real union, the individual constituent entities may have devolution of powers but are subordinate to a central government or coordinated in some sort of organization. In a federalised system, the constituent entities usually have internal autonomy, for example in the setup of police departments, and share power with the federal government, for whom external sovereignty, military forces, and foreign affairs are usually reserved. The union is recognised internationally as a single political entity. A political union may also be called a legislative union or state union.A union may be effected in many forms, broadly categorized as:

• Incorporating union
• Incorporating annexation
• Federal union
• Federative annexation
• Mixed unions

Japan is divided into 47 prefectures (都道府県, todōfuken, [todoːɸɯ̥ꜜkeɴ] ), which rank immediately below the national government and form the country's first level of jurisdiction and administrative division. They include 43 prefectures proper (県, ken), two urban prefectures (府, fu: Osaka and Kyoto), one regional prefecture (道, dō: Hokkaidō) and one metropolis (都, to: Tokyo). In 1868, the Meiji Fuhanken sanchisei administration created the first prefectures (urban fu and rural ken) to replace the urban and rural administrators (bugyō, daikan, etc.) in the parts of the country previously controlled directly by the shogunate and a few territories of rebels/shogunate loyalists who had not submitted to the new government such as Aizu/Wakamatsu. In 1871, all remaining feudal domains (han) were also transformed into prefectures, so that prefectures subdivided the whole country. In several waves of territorial consolidation, today's 47 prefectures were formed by the turn of the century. In many instances, these are contiguous with the ancient ritsuryō provinces of Japan.

Each prefecture's chief executive is a directly elected governor (知事, chiji). Ordinances and budgets are enacted by a unicameral assembly (議会, gikai) whose members are elected for four-year terms.

Fu (Chinese: 府; pinyin: fǔ) is a traditional administrative division of Chinese origin used in the East Asian cultural sphere, translated variously as commandery, prefecture, urban prefecture, or city. They were first instituted as a regular form of administrative division of China's Tang Empire, but were later adopted in Vietnam, Japan and Korea. At present, only two fu still remain: the prefectures of Kyoto and Osaka in Japan.

The term fu is currently also used in Chinese to translate the provinces of Thailand, but not those of mainland China, Taiwan or other countries.

The Fuhanken Sanchisei (府藩県三治制; "Fu, Han and Ken three-tiered Governance System") was the subnational government structure in early Meiji Japan. It lasted from the Boshin War, the start to the Meiji Restoration, in 1868 until the replacement of all remaining feudal domains (-han) with prefectures (-ken) in 1871. During this period, prefectures, urban prefectures (府, fu) and rural prefectures (県, ken), controlled by the new central government, and daimyō Domains (藩, han), still under their pre-restoration feudal rulers, formed the primary administrative subdivisions of the country. The exact numbers varied continually as adjustments to the feudal territorial divisions, mergers and splits started to take up pace, but very roughly there were about >250 -han and about <50 -fu/-ken in total during this time.

As the political borders changed all the time, ancient ritsuryō provinces, essentially static except for some modernizing adjustments in the North where the giant provinces of Mutsu and Dewa (both Tōsan Circuit) were split up and a new circuit (Hokkai Circuit) with 10 provinces was added on Ezo, remained the primary geographic frame of reference even in Meiji Japan until around the turn of the century – just as they had been throughout the late Middle Ages and early modern period.

Mayotte (/maɪˈɒt/ my-OT; French: Mayotte, [majɔt] ; Shimaore: Maore, IPA: [maˈore]; Kibushi: Maori, IPA: [maˈori]), officially the Department of Mayotte (French: Département de Mayotte), is an overseas department and region and single territorial collectivity of France. It is one of the overseas departments of France as well as one of the 18 regions of France, with the same status as the departments of Metropolitan France. It is an outermost region of the European Union and, as an overseas department of France, part of the eurozone.

Mayotte is located in the northern part of the Mozambique Channel in the western Indian Ocean off the coast of Southeastern Africa, between the northwestern part of the island of Madagascar and northeastern Mozambique on the continent. Mayotte consists of a main island, Grande-Terre (or Maore), a smaller island, Petite-Terre (or Pamanzi), as well as several islets around these two. Mayotte's land area is 374 square kilometres (144 sq mi) and, with its 320,901 people according to January 2024 official estimates, is very densely populated at 858 inhabitants per km (2,228 per sq mi). The biggest city and prefecture is Mamoudzou on the larger Grande-Terre. The Dzaoudzi–Pamandzi International Airport is located on the neighbouring smaller island of Petite-Terre. The territory is also known as Maore, the native name of its main island.

Prefect (from the Latin praefectus, substantive adjectival form of praeficere: "put in front", meaning in charge) is a magisterial title of varying definition, but essentially refers to the leader of an administrative area.

A prefect's office, department, or area of control is called a prefecture, but in various post-Roman Empire cases there is a prefect without a prefecture or vice versa. The words "prefect" and "prefecture" are also used, more or less conventionally, to render analogous words in other languages, especially Romance languages.

The 12 Regions of Morocco are subdivided into 75 second-level administrative subdivisions, the Prefectures and provinces. There are 13 prefectures and 62 provinces. Each prefecture or province is subdivided into arrondissements (only in prefectures of some metropolitan areas), municipalities (communes, sing. commune) or urban municipalities (communes urbaines, sing. commune urbaine) in other urban areas, and districts (cercles, sing. cercle) in rural areas. The districts are subdivided into rural municipalities (communes rurales, sing. commune rural). One prefecture (Casablanca) is also subdivided into préfectures d'arrondissements (sing. préfecture d'arrondissements), similar to districts (cercles) except they are grouping a few arrondissements instead of rural municipalities.

Note: The arrondissements and (urban) municipalities should probably be thought of as fourth-level subdivisions, on the same level as the rural municipalities, but they are not part of any district.

Bas-Rhin (French pronunciation: [bɑ ʁɛ̃] ) is a department in Alsace which is a part of the Grand Est region of France. The name means 'Lower Rhine', referring to its lower altitude among the two French Rhine departments: it is downstream of the Haut-Rhin (Upper Rhine) department. Both belong to the European Upper Rhine region. It is, with the Haut-Rhin (Upper Rhine), one of the two departments of the traditional Alsace region which until 1871, also included the area now known as the Territoire de Belfort. The more populous and densely populated of the pair, it had 1,152,662 inhabitants in 2021. The prefecture is based in Strasbourg. The INSEE and Post Code is 67.

On 1 January 2021, the departemental councils of Bas-Rhin and Haut-Rhin merged into the European Collectivity of Alsace.