The year 1,000 before the Battle of Yavin (BBY) was a transformative span of time for the Galactic Republic, the Jedi Order, and the Sith. The New Sith Wars ended with the defeat of the Sith Brotherhood of Darkness, leading the Jedi to believe that the Sith had been destroyed. Darth Bane survived, however, and created the Order of the Sith Lords, with the Rule of Two as its guiding principle.