by Illusive J
Author's note: in this AU, the geth were created in the Earth year 2055. not in the 1700s or whatever it was in the canon universe. Also, immediately, after the Morning War between the geth and the quarians, instead of gathering intel on the other organic species, they decidided to explore the Sol system, which is adjacent to geth space in this universe. Also, the charon relay was not frozen over with ice.
Human Year 2049: Quarian high council decides preemptive strike on geth is necessary before they achieve full sentience and decide to attack.
Human Year 2051: Quarian population reduced to lest than one percent, geth control all former quarian colonies are now controlled by the geth. Geth ground platform popultaion 114 billion, ship fleet 4000 ships, mostly modified quarian ships.
Human Year 2055: Geth discover a deactivated mass relay near the rear of geth space. Upon activation, geth discover a system of colonies created by a mamallian race. New contacts have not yet left home solar system, not yet discovered FTL travel or mass effect technology.
Geth Central Intelligence Platform
/ ORGANIC HARD CONTACT DISCOVERED AT COORDINATES (5.339, 9.1)/
/CONSENSUS ACHIEVED: MAKE PEACEFUL CONTACT WITH UNKOWN ORGANICS/
/POSSIBLE ALLY AGAINST CREATOR RETALIATION FOR MORNING WAR/
/SEND PLATFORMS INTO UNKNOWN ORGANIC SPACE TO MAKE PEACEFUL FIRST CONTACT./
Human year 2081: After first contact with Geth, humans integrate into geth space and geth integrate into human society.
Human year 2084: Geth and humans create joint government with joint military, fleet, and colonization bureau.
Human year 2096: geth space platform nodes in orbit over every colonized world in human and geth space.
Human year 2100: First human-geth "symbiont" is created by top scientists, symbiont has human body and emotions but cold logic of geth.
Human year 2112: Combined human-geth fleet numbers reach 9000 combat ready ships. Combat ground soldier reach 18,000,000 combat ready soldiers.
Human year 2122: Human-geth alliance send a probe fleet into unknown parts of space to search for Creator remnants, results show that Creators were one of a whole coalition of species, hacked extranet connections show that most sprecies view geth as monsters and butchers who destroyed the Creators, Creator population housed in fleet that travels galaxy looking for resources.
Human year 2137: Geth and humans see themselves as one race due to growing Symbiont population on colonized worlds.
Human year 2139: Geth-Himan government discovers unknown mass relay in back of original geth system that acts as a backdoor to rest of galaxy, decision is made to send a fleet with diplomatic intentions.