In AD 2801 the Galactic Federation is formed, which results in political power moving away from the planet Earth (now named Terra) and the Space Era calendar replacing the Gregorian calendar, with 2801 AD now being SE 1 [REF].
In IC 164/SE 473/AD 3273, a group of serfs in the Altair star system manage to escape captivity and make "the Long March of 10,000 Light-Years" into the Sagittarius Arm to escape the Galactic Empire, which is located within the Orion Arm.