The Unification War was a war fought between the Alliance and the Independents from 2506 to 2511. The core planets had taken much of the system resources and technology and left the outer planets to fend for themselves. After years of unsatisfactory talks, the outer planets seceded from the Alliance and gathered support of other planets. Their aim was to start their own alliance, without the interference of the center planets. The Alliance could not accept this loss of face and so the war began.