Complex sentence: After several rebellions and wars failed to take control of the Earth Sphere, in U.C.0100 The Republic of Zeon officially rejoined the Earth Federation, though it, like all other Sides, would regain its independence permanently during the Age of the Warring Space States Era.
Split into simpler sentences: After several rebellions and wars failed to take control of the Earth Sphere, in U.C.0100 The Republic of Zeon officially rejoined the Earth Federation. Though it like all other Sides would regain its independence permanently during the Age of the Warring Space States Era.