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Because of the lack of maintenance of the planet's infrastructure during the conflicts that consumed Mars during that period, its atmospheric radiation shields and oxygen generators soon disintegrated, allowing deadly solar ultraviolet radiation to destroy the fragile Martian ecosystem and wiping out the sparse, genetically-engineered vegetation which had taken millennia to cultivate.Īs other toxins spilled into the environment from the degeneration of the world's great macro-industrial complexes, Mars returned to being the red wasteland that had characterised its past. On Mars, the situation became even more dire, for the Red Planet's terraformation was still incomplete. The onset of the Age of Strife would shatter this amity, as Terra descended into techno-barbarism. In times long past, during the Dark Age of Technology, both Terra and Mars maintained separate interstellar empires and collaborated peacefully for the benefit of all Mankind. To symbolise the alliance created between Terra and Mars that marked the true birth of the new Imperium, the Emperor changed His personal sigil from one of a raptor and lightning bolt - the Raptor Imperialis - to the Aquila, a two-headed eagle whose heads represented the twin foundations of the new human interstellar government - Terra and Mars, Imperium and Mechanicum. In exchange, the Mechanicum would supply the Imperium of Man with the weapons, starships, materiel and technicians required to initiate the Emperor's Great Crusade to reunite all of the human-settled galaxy beneath the banner of the Imperium. The Imperium would provide six houses of Navigators and Astropaths to the Mechanicum so that it could unite its far-flung empire of lost Forge Worlds and continue its sacred Quest for Knowledge across the stars.
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The Treaty of Mars granted political autonomy to the Mechanicum of Mars and its Forge Worlds scattered across the galaxy as well as an exception to the Imperial Truth so that the Cult Mechanicus' adherents could continue to practice their faith. To prevent a wasteful and costly war between the Imperium of Man that was forged on Terra in the wake of the end of the Unification Wars in 712.M30 with the techno-empire that had evolved on the Red Planet during the Age of Strife, the Emperor of Mankind proposed a generous compromise that would cement the alliance and collaboration between both entities for the next ten millennia.
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The Treaty of Mars, known as the Treaty of Olympus Mons to the Adeptus Mechanicus, is the formal name given to the binding agreements that regulate the coexistence of the Imperium of Man and what was then the Mechanicum of Mars since before the start of the Great Crusade.
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