900 before the Battle of Yavin (BBY) was a year in the era known as the Great Peace of the Republic. During that period of time, the Galactic Republic explored parts of the Deep Core, and settlers colonized previously unexplored regions of the Outer Rim Territories. Around 900 BBY, the five families of the Quintad oligarchy arrived on the planet Eriadu and began remaking it into a polluted factory world.