Fiction:Elalma Galaxy

Life
The Triangulum Galaxy is dominated by mostly carbon based life forms, other life forms are rare or non-existent at all.

Division
The center of the galaxy is controlled by the grox, while one arm is dominated by the Galian Alliance and its neighbors, while the masri hold the connection to the arm to the center, effectively blocking the Alliance from the rest of the galaxy. At the center the grox hold complete control, no other race save for the criii have entered alive. Beyond these there are countless other races in the galaxy, but very few major powers.