.Summary.
Gundam Wing begins in the years of AC (After Colony), ie. after the colonisation of space by humans. Perpetual war occurs on Earth, while the inhabitants living in the space colonies enjoy peace
After the war on Earth was finally over in about 175 AC or so, the Earth government established an "Earth Sphere Unified Alliance" which was to promote peace on Earth as well as on the Space Colonies. However, the Alliance was only a puppet for the mighty industrialist group, The Romeller Foundation. In the name of peace, the Alliance's Army, known as "OZ" seized control of all space colonies, crushing all oppositions with mech-like fighting machines known as Mobile Suits (MS).
This sets the scene for the start of the series which begins in 195 AC.
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