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Spoiler warning: Plot and/or ending details follow: The following content contains spoilers!

For the mirror universe counterpart, see Terran Empire.

United Earth is one of the founding Member States of the United Federation of Planets and the planetary state for Earth. (ENT episodes: "Zero Hour", "These Are the Voyages...", "Home", "The Forge")

United Earth is a parliamentary republic headed by a President. (ST novel: Starfleet: Year One) as head of state, and a Prime Minister who is the head of government. (TNG - Tales of the Dominion War short story: "Eleven Hours Out")

Members of the United Earth Cabinet receive the title of "Minister." (ENT episodes: "Demons", "Terra Prime", ENT novel: The Good That Men Do)

In 2155, the United Earth Prime Minister's office was located in London, as was the President's office in 2160. (STO video game: Divided Earth; ST novel: Starfleet: Year One)

In the 2150s, the United Earth Parliament building was located in Paris. (ST - Section 31 novel: Control)

The Prime Minister also maintained an office in Paris near the Place de la Concorde. (ENT - The Romulan War novel: Beneath the Raptor's Wing)

United Earth was responsible for the creation of the Coalition of Planets in 2155. (ENT episodes: "Demons", "Terra Prime")

United Earth Prime Minister Nathan Samuels began the initial talks the previous year and presided over the signing of the Coalition Compact (ENT novel: The Good That Men Do) on the floor of the United Earth Parliament chamber. United Earth Interior Minister Haroun al-Rashid, who would later go on to serve as the first Federation President, was also a significant representative in the Coalition talks. (ST - Section 31 novel: Control; ENT novel: The Good That Men Do)

After fighting a war with the Romulan Star Empire, United Earth was one of the five founding states of the Federation, with its citizens being amongst the primary architects of the Articles of the Federation. (ENT episodes: "Zero Hour", "These Are the Voyages...")

In the 2150s, United Earth's primary defense agency was the Military Assault Command Organization, with the United Earth Starfleet eventually being pressed into the role of planetary defense during the Xindi crisis. (ENT episode: "The Expanse")

Internal security was the purview of the Earth Security Agency. (ST - Section 31 novel: Control)

Earth Surface Forces served as the domestic security organization for the planet through the early part of the 23rd century. (TOS novel: The Final Reflection)

The leaders of the United Earth civil government were criticized by investigators for their inaction during "the Leyton Affair" in 2372. (TNG - Slings and Arrows eBook: The Insolence of Office)

References to Earth security forces being 'federalized' by President Jaresh-Inyo in "Homefront" and "Paradise Lost" were originally intended to appear, but were cut for time.


In the late 32nd century, in the wake of the cataclysm known as The Burn (where dilithium stores throughout the galaxy simultaneously detonated, causing widespread destruction), United Earth seceded from the Federation and once again became a sovereign entity. In the absence of the Federation, the United Earth Defense Force was then created to see to the defense of the independent Earth. (DSC episode: "People of Earth")

High-Ranking United Earth Officials



Stars and Star systems

Military organizations

Note: Some of these defense organizations could have been integrated into Federation Starfleet and other Federation defense organizations (such as Federation Naval Patrol) after the founding of the United Federation of Planets.

Alternate timelines

In an alternate timeline where the attack on San Francisco by Terra Prime was successful, the Isolationist Party took control of Earth’s parliament, and in 2161, opted not to have the United Earth join in an alliance with the Vulcans, Andorians and Tellarites. Instead, United Earth remained an independent stellar power well into the mid 23rd century and significant rival of the Interstellar Coalition, the union eventually formed by the coming together of the Vulcans, Andorians, Tellarites and Denobulans. In this timeline, United Earth exploited ideological and philosophical differences on Halka and in the Rigel star system so as to continue its mining operations unopposed; the exploitation was the cause of much heated debate when Humans petitioned to join the Interstellar Coalition in 2264.

As of 2264, colony worlds of United Earth included Mars, Vega colony, Aldebaran Colony, Benecia Colony, Ivor Prime, Tarsus IV and Epsilon Canaris III. Secessionist or independence movements existed (or had existed) on worlds such as Mars and Epsilon Canaris III. However, they were quickly quelled by the government of United Earth.

In addition to colony worlds, United Earth, by the mid 23rd century, had spheres of influence which included Canopus Planet, Halka, Neural, Rigel IV, Rigel V, and Rigel VII. (TOS - Myriad Universes novel: A Less Perfect Union)


Canonical information on the dating of the establishment of United Earth is somewhat contradictory and unclear. The TNG episode: "Attached" mentions the year 2150 as the date all Earth's nation-states joined a global government, while the movie Star Trek: First Contact suggests a united world government was established in 2113. Adding to the confusion, Articles of the Federation states that "all the governments" on Earth signed the treaty in Paris "two hundred and fifty years ago" (i.e. 2130). Presumably, the establishment of a truly united Earth was an evolutionary process.


Earth states, organizations and geographical regions
Planetary State United Earth International organizations United Nations/New United NationsGreat KhanateOptimum Movement United Earth logo.png
Africa Pan-African Alliance African Confederation (Somalia) • EgyptMadagascarMaliSenegalSouth AfricaSudanUnited States of Africa (Kenya)
Asia and Siberia Eastern Coalition AfghanistanChinaIndiaIndonesiaJapan (Empire of Japan) • KazakhstanKorea (S. Korea) • MalaysiaMughal EmpirePakistanPhilippinesRussiaSoviet UnionSingaporeThailandTibetVietnam
Europe European AllianceEuropean HegemonyEuropean UnionMediterranean AllianceUnited States of Europe BelgiumBulgariaCzechoslovakiaDenmarkFranceGerman Democratic RepublicGermanyGibraltarGreeceHungaryIcelandIrelandItalyNetherlandsNorwayPan SlaviaPolandPortugalRoman EmpireSerbiaSoviet UnionSpainSwedenSwitzerlandTurkeyUkraineUnited Kingdom (England, Scotland, Wales) • Yugoslavia
Middle East Muslim BlocPan-Semite Union ArabiaIranIraqIsraelLebanonTurkeySaudi Arabia
North America Caribbean Alliance CanadaCubaJamaicaMexicoPanamaDominican RepublicPuerto RicoTobagoTrinidadUnited States of America
Oceania and Antarctica AustraliaEaster IslandNew GuineaNew ZealandNorfolk IslandPitcairnSolomon Islands
South America BrazilColombiaChileVenezuela

External links