Systems Coalition 2191 CE - present
The Systems Coalition at its greatest extent in 2216 CE, following the Post-Apocalyptic War. Territories owned by the Coalition are marked in red. The satellite state of the New Batarian Republic is marked in blue, and the demilitarized Coalition-batarian border is marked in pink.
Political information
Type of government:	Representative democracy/Constitutional democracy (Westminster System)
Founding document:	Pact of Interstellar Coalition
Constitution:	Constitution of the Systems Coalition
Head of State:	Prime Minister Michael Terez (first) Prime Minister Giselherr Hawker (current)
Head of government:	Prime Minister Michael Terez (first) Prime Minister Giselherr Hawker (current)
Commander-in-chief:	Secretary of Defense Steven Hackett (first) Secretary of Defense Jacoby Poppleton (current)
Legislative:	Systems Coalition Parliament
Military:	Systems Coalition Armed Forces
Societal information
Capital:	Epitaph Station (primary) Earth (secondary) New Earth (in Andromeda galaxy)
Official language:	North American languages, South and Latin American languages, European languages, Russian, Asian languages, Middle Eastern languages, Oceanic languages, North African languages and South African languages.
Currency:	Credit (2191 CE - 2201 CE) Attica (2201 CE - 2253 CE) Credit (2253 CE - present)
Official religion:	No state religion, although Shepardism was once very prevalent
Holidays:	Alliance Day Coalition Day Armistice Day Galactic Remembrance Day Dominion Day Galactic Victory Day Victory in Andromeda Day
Anthem:	"The Shepard Lives On"
Historical information
Formed from:	Systems Alliance Union of Secessionist Colonies
Dates:	31 December 2191 CE - present (808 years and 2 days (and counting))
Preceded by:	Systems Alliance Union of Secessionist Colonies

"Solidarietatis omnium."

— Systems Coalition motto

The Systems Coalition, simply known as the Coalition, and also known as the Earth Systems Coalition, Earth Coalition, Imperial Earth, the Human Empire and Human Coalition, is the representative body of Earth, its nations and human colonies from 2191 CE to present. Founded in 2191 CE, the Systems Coalition succeeded the Systems Alliance, absorbing all its military, government and civilian assets, its status as a representative body, and its territories and jurisdictions. It was called a 'Coalition', as its formation was a pact between the Alliance and those colonies which had temporarily seceded from it post-Reaper War. Following its creation, the Coalition earned the ire of its neighbours in the New Council when it began to aggressively expand into the Attican Traverse, as well as militarize at an alarming rate. The Coalition absorbed much of the Turian Hierarchy's former peacekeeping duties, and thus became a major superpower. In 2200 CE, tensions reached their peak when the Coalition and the Republic of Rannoch seceded from the New Council to form the Galactic Dominion. A brief cold war between the two powers went hot in 2205 CE with the Post-Apocalyptic War, and after ten years of conflict, the Dominion was victorious, with the Coalition annexing former turian, some salarian, a few krogan and all of the batarian territories, while the rest was divided up amongst their allies.

The Coalition gradually became more and more authoritarian during the decades following their victory, with numerous war crimes being committed and ghettos being set up on occupied worlds, along with rumors of entire districts on Palaven being liquidated. By 2253 CE, tensions reached their peak when the Dominion Civil War broke out. While initially isolated to its colonies, the civil war did spill over onto Earth, with numerous factions being formed and fighting each other, all of which eventually teamed up against the Coalition. A few days before the end of the war, a coup d'etat ousted Connor Faringar's government and installed a DDF puppet administration. Faringar was later captured by PGSA troops and brought to Munich, Germany for trial. He was rescued by Promethean blitztroopers from Prometheus' German division, but was finally recaptured and tried for war crimes in Munich in 2254 CE, along with other high-ranking Coalition loyalists, and executed the following month by firing squad.

Since the civil war, the Coalition has slowly decreased military expenditure, retiring nearly half of its active military forces and introducing broad reforms to cut down on military spending and recruitment quotas, as well as being forced to sign the Virmire Accords, which also required that the Coalition dissolve its "attican colonial empire", and allow some of its colonies independence, or carve them up amongst other governments. A neutral zone was established around Coalition borders, barring Coalition vessels from passing this line, and they also had to sign the Tuchankan Naval Reduction Treaty, which was the official replacement for the Treaty of Farixen. Centuries after the war, the Coalition would be allowed more freedom again, and the neutral zone was finally dissolved in 2560 CE. The Coalition became a productive member of the United Galactic Republics, and provided ships and troops to the GAE fleet in 2826 CE. By 2930 CE, the Coalition, as had many other governments, had established colonies in the Andromeda galaxy, and took on the Angaran Republic as a protectorate for a period of sixteen years. By 2940 CE, the Coalition's capital in Andromeda was centered at New Earth in the Mandela cluster.

The motto of the Systems Coalition is the Latin term "Solidarietatis omnium", which roughly translates to "Solidarity for all."