Great Galactic Schism

The Great Galactic Schism was a catastrophic event that began around 750 ABY, after the Great Revolt, when the attempted to seize power from the. The actual fragmentation began when the seceded from the Hutt Dominion, after only 5 years of  rule. The Dominion attempted to subjugate Yavin back into their authority, but were ultimately unsuccessful. This action inspired the other planets, with a dozen planets seceding the very day following the end of the battle.