Below is a list of sovereign states with the dates of their formation (date of their independence) and date of their current form of government (their constitution), this later sorted by continent.
This list includes the 195 states which are currently member states of the United Nations or non-member observer states with the United Nations General Assembly. This does not include extinct states, but does include several states with limited recognition.
South Sudan (/suːˈdɑːn, -ˈdæn/), officially the Republic of South Sudan, is a landlocked country in East Africa. It is bordered by Sudan to the north, Ethiopia to the east, the Democratic Republic of the Congo to the southwest, Uganda to the south, Kenya to the southeast and to the west by the Central African Republic. South Sudan's diverse landscape includes vast plains and plateaus, dry and tropical savannahs, inland floodplains, and forested mountains. The Nile River system is the defining physical feature of the country, running south to north across its center, which is dominated by a large swamp known as the Sudd. South Sudan has an estimated population of just over 12.7 million in 2024. Juba is the capital and largest city.
Sudan was occupied by Egypt under the Muhammad Ali dynasty and governed as an Anglo-Egyptian condominium until Sudanese independence in 1956. Following the First Sudanese Civil War, the Southern Sudan Autonomous Region was formed in 1972 and lasted until 1983. A second Sudanese civil war soon broke out in 1983 and ended in 2005 with the Comprehensive Peace Agreement. Later that year, southern autonomy was restored when an Autonomous Government of Southern Sudan was formed. South Sudan became an independent state on 9 July 2011, following 98.8% support for independence in a January 2011 referendum. It is the most recent sovereign state with widespread recognition as of 2025. South Sudan descended into a civil war from 2013 to 2020, enduring rampant human rights abuses, including forced displacement, ethnic massacres, and killings of journalists by various parties. It has since been governed by a coalition formed by leaders of the former warring factions, Salva Kiir Mayardit (Sudan People's Liberation Movement or SPLM) and Riek Machar (Sudan People's Liberation Movement-in-Opposition or SPLM-IO). The country continues to recover from the war while experiencing ongoing and systemic ethnic violence.
Colonization (British English: colonisation) is a process of establishing control over areas or peoples for foreign people to advance their trade, cultivation, exploitation and possibly settlement. Colonization functions through establishing a differentiation between the area and people of the colonized and colonizers, establishing metropoles, coloniality and possibly outright colonies. Colonization is commonly pursued and maintained by, but distinct from, imperialism, mercantilism, or colonialism. Conquest can take place without colonization, but a conquering process may often result in or from migration and colonizing. The term "colonization" is sometimes used synonymously with the word "settling", as with colonization in biology.
Settler colonialism is a type of colonization structured and enforced by the settlers directly, while their or their ancestors' metropolitan country (metropole) maintains a connection or control through the settler's activities. In settler colonization, a minority group rules either through the assimilation or oppression of the existing inhabitants, or by establishing itself as the demographic majority through driving away, displacing or outright killing the existing people, as well as through immigration and births of metropolitan as well as other settlers.
The phenomenon of colonization is one that has occurred around the globe and across time. Various ancient and medieval polities established colonies – such as the Phoenicians, Babylonians, Persians, Greeks, Romans, Han Chinese, and Arabs. The High Middle Ages saw colonising Europeans moving west, north, east and south. The medieval Crusader states in the Levant exemplify some colonial features similar to those of colonies in the ancient world.
A new phase of European colonialism began with the "Age of Discovery", led by the Portuguese, who became increasingly expansionist following the conquest of Ceuta in 1415. Portugal aimed to control navigation through the Strait of Gibraltar, to spread Christianity, to amass wealth and plunder, and to suppress predation on Portuguese populations by Barbary pirates (who operated as part of a longstanding African slave tradeat that point a minor trade, one the Portuguese would soon reverse and surpass). Around 1450 the Portuguese developed a lighter ship, the caravel based on North African fishing boats. Caravels could sail further and faster than previous vessels, were highly maneuverable, and could sail into the wind.
The Comoros, officially the Union of the Comoros, is an archipelagic country made up of three islands in Southeastern Africa, located at the northern end of the Mozambique Channel in the Indian Ocean. Its capital and largest city is Moroni. The religion of the majority of the population, and the official state religion, is Islam. Comoros proclaimed its independence from France on 6 July 1975. The Comoros is the only country of the Arab League which is entirely in the Southern Hemisphere. It is a member state of the African Union, the Organisation internationale de la Francophonie, the Organisation of Islamic Co-operation, and the Indian Ocean Commission. The country has three official languages: Comorian, French and Arabic.
At 1,659 km (641 sq mi), the Comoros is the third-smallest African country by area after São Tomé and Príncipe and Seychelles. In 2019, its population was estimated to be 850,886. The sovereign state consists of three major islands and numerous smaller islands, all of the volcanic Comoro Islands with the exception of Mayotte. Mayotte voted against independence from France in a referendum in 1974, and continues to be administered by France as an overseas department. France has vetoed a United Nations Security Council resolution that would have affirmed Comorian sovereignty over the island. Mayotte became an overseas department and a region of France in 2011 following a referendum which was passed overwhelmingly.