2069

Armstrong Outpost at Shackleton Crater becomes the first human
settlement on Luna. It is formally founded on July 24, the 100th anniversary of
the first lunar landing.

2103

Lowerl City in Eos Chasma becomes the first human settlement on Mars.

2137

Eldfell-Ashland Energy Corporation demonstrates helium-3 fuel extraction
from the atmosphere of Saturn.

2142

Construction of Gagarin Station (Jump Zero) begins beyond the orbit of
Pluto.

2148

Prospectors discover the Prothean ruins at Promethi Planum on Mars.

2149

Translation of Prothean data leads humans to the Charon mass relay.
Systems Alliance founded to coordinate exploration and colonization of extra-
solar worlds.

2151

A shipping accident at Singapore International Spaceport exposes
downwind communities to containers of dust-form element zero. Alliance begins
construction of Arcturus Station.

2152

Roughly 30% of the children born in Singapore after element zero
exposure suffer from cancerous growths. Systems Alliance begins settlement of Earth's first extra-solar colony world, the planet Demeter.

2154

Commander Shepard born.

2155

Systems Alliance occupies completed portions of Arcturus Station as a
headquarters.

2156

Some children of Singapore exhibit minor telekinetic abilities.

2157

Turians encounter human explorers; First Contact War. Occupation and
liberation of the human colony of Shanxi.

2158

Humans learn potential of biotics. An international effort to track
element zero exposures begin. Roughly 10% of exposed children show some sign
of biotic ability.

2160

Systems Alliance Parliament formed.

2165

Humans establish embassy on Citadel.

2170

Batarian slavers attack the Alliance colony Midoir.

2176

Skyllian Blitz - Pirates and slavers attacked Elysium, the human capital
in the Skyllian Verge.

2177

Thresher maws devour the Alliance colony of Akuze.

2178

In retaliation for the Skyllian Blitz, an alliance fleet wipes out an
army of slavers on the moon of Torfan.

2183

Commander Shepard, along with the Systems Alliance and Citadel fleets, repel the Reaper threat by killing the rogue Spectre Saren and the Reaper AI, Sovereign. The Citadel is badly damaged.

2196

Early: Quarian Migrant Fleet is attacked by the Geth. The Turians intervene, but the Quarians lose a lot of ships.

Late: The Council orders the invasion of the Geth homeworld. Three Citadel Fleets attack the Geth. The fight ends at Judecca, the capital city of the Geth homeworld. The Citadel forces defeat the Geth, with heavy losses on both sides, and leave the system. The Geth are left in a weakened state. Yarik Streydus takes control of the Geth and begins to rebuild their forces.

2199

Early: The Geth finished rebuilding their forces under the leadership of Yarik Streydus. They began to attack Alliance colonies starting with Elysium. The Geth conquer Elysium in three days. The greatest tragedy in Alliance history. The Council send no help. One week later the Geth attack New Eden Prime. The Alliance puts up more of a fight, but New Eden falls in two weeks. The Council sends very little help.

Late: Terra Firma, a massive human political group against aliens, takes the initiative and begins to sow the seeds of mistrust towards the Council. The Geth continue to conquer world after world.

2200

Early: Terra Firma secedes from the Systems Alliance, causing widespread conflict within the Systems Alliance military. Many loyal Alliance citizens are forced to a number of refugee camps after Terra Firma soldiers take Sol and attack the Citadel embassies.

Late: The Geth attack Citadel Station with their entire fleet. The Citadel's defenders, including both Systems Alliance and Terra Firma personnel fight valiantly, but are forced to retreat in the face of the Geth onslaught. After a short occupation, the Geth are deactivated and the Citadel is retaken.

2201

Early: The Alliance retakes Sol in the Great Comprmise. After the Arcturus fleet stormed Jump Zero, the military seiged the inner planets. Talks ended in Terra Firma becoming a political party, and amnesty granted to all those in the group. For the first time, talks are opened with Geth that have rebelled against Yarik Streydus.

Late: Humanity gains a seat on the Citadel Council due to their actions in the Second Geth Invasion. The Alliance also starts OPERATION STRIKE, and all out assualt on Geth and pirates in the Traverse. The Rebel Geth gain an embassy on the citadel, despite general opposition

2202

Early: The Geth are purged from the Traverse, pirates are driven into hiding, and the Alliance declares the area Safe for the first time in years. The Council honored their efforts by awarding them colonization rights in the Archos Verge, a semi stable region once awarded to the Turians for colonization. Geth attacks become more commonplace agianst all races colonies. Due to the intel gained after the Seige, militaries have adapted techniques that repel almost all of them.

Late: Batarian extremists begin a new campaign agianst the Alliance, trying to wipe out outposts in the Traverse. Thousands of humans die, but an Alliance Flotilla strikes back. Attacks begin on Archos colonies also, trying to stop the Humans from gaining anymore space that they believe belong to them. Geth seem to start blantly suicidal mission, throwing huge numbers of forces at areas heavily defended.