The Commonwealth of Earth is a large and powerful nation, representing the majority of humanity as a species. From their capital of Earth, the Commonwealth has explosively expanded, taking over much of the Orion Arm.
When man began establishing settlements on other worlds, a series of bloody territorial and ideological wars broke out, resulting in the collapse of numerous nations. The expense of colonization and war across such a vast expanse was unprecedented, and nearly every party involved was financially ruined.
Leaderless, humanity flailed, its colonies cut off and starving, while the once great nations of Earth lay in shambles. From the ashes of the devastation rose the Commonwealth, a group of charismatic opportunists espousing platitudes about uniting mankind for the good of all, and ending the division and mistrust that had so long plagued the world.
The Commonwealth strives to instill a strong sense of pride and patriotism in its citizens, in hopes of fueling its imperialistic efforts. Though technically a republic, the government is extremely corrupt, with wealthy businesses able to discreetly pay off politicians to ensure that their success continues uninterrupted. The Commonwealth has more in common with an oligarchy or aristocracy than a proper republic.
One of the Commonwealth’s most fervent goals is to unite all of humanity beneath their banner. They are known to hold particular contempt for the Independent States of Perseus, a splinter faction of humans that seceded from the Commonwealth and left the Orion Arm, yearning to be free from what they viewed as an oppressive and controlling society.
Today, the Commonwealth continues to expand, squabbling with other polities over uncharted planets and patches of unclaimed space. They are steadily consolidating their power, waiting until the time is right to reclaim their lost citizens.