The Galactic Confederacy of Independent Systems, also known as the Confederacy, was an unrecognized, galactic, democratic, and confederate government that existed during the Clone Wars. The Confederacy was formed by thousands of secessionist star systems on the grounds of corruption within the Galactic Senate.
The secessionist movement began in 35 BBY, beginning with the invasion of Alderaan, through the use of a secretive clone army, given to the Confederacy on the orders of Chancellor Palpatine. The following ten years would see the Clone Wars wage across the galaxy with the Confederacy rapidly attempting to bring the Republic to its knees. The Confederacy employed several military groups to their cause, the most prominent being the Union of Bounty Hunters.
Unknown to the majority of the galaxy, however, the war was merely a ploy—Palpatine, the leader of the Republic, was a Sith Lord, to whom the Heads of State answered. Towards the end of the conflict, the Confederacy suffered several major defeats in the Outer Rim Territories.
In 20 BBY, Palpatine enacted a Galactic purge of the Jed Order, beginning with the Massacre on Korriban, which led to the destruction of the cloning facility present on the planet.