Region in the context of "History of Nigeria"

A state is a political entity that regulates society and the population within a definite territory. Government is considered to form the fundamental apparatus of contemporary states.

A country often has a single state, with various administrative divisions. A state may be a unitary state or some type of federal union; in the latter type, the term "state" is sometimes used to refer to the federated polities that make up the federation, and they may have some of the attributes of a sovereign state, except being under their federation and without the same capacity to act internationally. (Other terms that are used in such federal systems may include "province", "region" or other terms.)

Jurisdiction (from Latin juris 'law' and dictio 'speech' or 'declaration') is the legal term for the legal authority held by a legal entity to enact justice. Jurisdiction is rarely claimed to be complete: rather it is limited for example by geography, subject matter, or other factor. It is only within the scope (inside the limits) of such jurisdiction that, for example, the parties to a dispute have standing to bring the matter (a legal question) before a judge, who has power (or 'jurisdiction') to decide it authoritatively.

A "jurisdiction" can also be understood as a category name for any separate polity legally constituted as such — for any government with legislative and other legal power over a particular territory, whether that area is a nation state or some smaller region. Thus, Australia, Arizona, North Yorkshire and New York City are each "a jurisdiction". In federations like the United States, jurisdiction in this polity sense applies at multiple levels (e.g., local, state, and national/federal).

The Near East (Arabic: الشرق الأدنى) is a transcontinental region around the Eastern Mediterranean encompassing the historical Fertile Crescent, the Levant, Anatolia, Egypt, the Balkans, Mesopotamia, and coastal areas of the Arabian Peninsula. The term was invented in the 20th century by modern Western geographers and was originally applied to the Ottoman Empire, but today has varying definitions within different academic circles. The term Near East was used in conjunction with the Middle East and the Far East (China and beyond), together known as the "three Easts"; it was a separate term from the Middle East during earlier times and official British usage. As of 2024, both terms are used interchangeably by politicians and news reporters to refer to the same region. Near East and Middle East are both Eurocentric terms.

According to the National Geographic Society, the terms Near East and Middle East denote the same territories and are "generally accepted as comprising the countries of the Arabian Peninsula, Cyprus, Egypt, Iraq, Iran, Israel, Jordan, Lebanon, Palestinian territories, Syria, and Turkey". Also, Afghanistan is often included.

Historical regions (or historical areas) are geographical regions which, at some point in history, had a cultural, ethnic, linguistic or political basis, regardless of latter-day borders. There are some historical regions that can be considered as "active", for example: Moravia, which is held by the Czech Republic, is both a recognized part of the country as well as a historical region. They are used as delimitations for studying and analysing social development of period-specific cultures without any reference to contemporary political, economic or social organisations.

Definitions of regions vary, and regions can include macroregions such as Europe, territories of traditional sovereign states or smaller microregional areas. Geographic proximity is generally the required precondition for the emergence of a regional identity. In Europe, regional identities are often derived from the Migration Period but for the contemporary era are also often related to the territorial transformations that followed World War I and those that followed the Cold War.

Lower Egypt (Arabic: مصر السفلى Miṣr as-Suflā) is the northernmost region of Egypt, which consists of the fertile Nile Delta between Upper Egypt and the Mediterranean Sea. The Nile River split into seven branches of the delta in Lower Egypt. Lower Egypt was divided into nomes and began to advance as a civilization after 3600 BC. Today, it contains two major channels that flow through the delta of the Nile River – Mahmoudiyah Canal (ancient Agathos Daimon) and Muways Canal (Arabic: بحر موَيس, "waterway of Moses").

The Kantō region (関東地方, Kantō Chihō; IPA: [kaꜜn.toː, kan.toː tɕiꜜ.hoː, kan.toː tɕi̥.hoꜜː]) is a geographical region of Honshu, the largest island of Japan. In a common definition, the region includes the Greater Tokyo Area and encompasses seven prefectures: Chiba, Gunma, Ibaraki, Kanagawa, Saitama, Tochigi, and Tokyo. Slightly more than 45 percent of the land area within its boundaries is the Kantō Plain. The rest consists of the hills and mountains that form land borders with other regions of Japan.

As the Kantō region contains Tokyo, the capital and largest city of Japan, the region is considered the center of Japan's politics and economy. According to the official census on October 1, 2010, by the Statistics Bureau of Japan, the population was 42,607,376, amounting to approximately one third of the total population of Japan.

Japan is often divided into regions, each containing one or more of the country's 47 prefectures at large. Sometimes, they are referred to as "blocs" (ブロック, burokku), or "regional blocs" (地域ブロック, chiiki burokku) as opposed to more granular regional divisions. They are not official administrative units, though they have been used by government officials for statistical and other purposes since 1905. They are widely used in, for example, maps, geography textbooks, and weather reports, and many businesses and institutions use their home regions in their names as well, for example Kyushu National Museum, Kinki Nippon Railway, Chūgoku Bank, and Tōhoku University.

One common division groups the prefectures into eight regions. In this arrangement, of the four main islands of Japan, Hokkaidō, Honshu, Shikoku, and Kyūshū, each form their own region, with Kyūshū also including the Satsunan Islands. The largest island, Honshū, is split into five regions. Okinawa Prefecture is usually considered part of Kyūshū, but it is sometimes treated as its own ninth region.

A polity is a group of people with a collective identity, who are organized by some form of political, institutionalized, social relations, and have a capacity to mobilize resources. It is the unit or entity of a political community or body politic.

A polity can be any group of people organized for governance, such as by the board of a corporation, and in the case of a federal country, the government that exists at both its federal level and the level of its subdivided regions. A polity may have various forms, such as a republic administered by an elected representative, a realm of a hereditary monarch, an incorporated city managed by an appointed mayor, and many others.

A federated state (also state, province, region, canton, land, governorate, oblast, emirate, or country) is a territorial and constitutional community forming part of a federation. A federated state does not have international sovereignty since powers are divided between the other federated states and the federal government. Unlike international sovereign states, which have what is often referred to as Westphalian sovereignty (such as exercised by their federal government), federated states operate under their domestic or federal law with relation to the rest of the world.

Federated states do not have automatic standing as entities of international law. Instead, the federal union (federation) as a single entity is the sovereign state for purposes of international law. Depending on the constitutional structure of a particular federation, a federated state can hold various degrees of legislative, judicial, and administrative jurisdiction over a defined geographic territory and is a form of regional government. A federated state may nonetheless establish offices internationally, for example, to promote trade or tourism, while still operating only within the trade policy or other applicable law of their federation, and their host country. They also may enter into international regional agreements under the laws of their federation and state, such as to protect a cross-border resource like water or other shared matters.