The Old Republic Timeline #1 – The Treaty of Coruscant

Check out a great video discussing how the Treaty of Coruscant was formed.

Some quick information on The Treaty of Coruscant:

The Treaty of Coruscant was the peace treaty that brought an end to the Great Galactic War in 3,653 BBY. The Galactic Republic was strongarmed into the treaty following a crippling stalemate in the war against the Sith Empire. While representatives of both factions met on Alderaan to discuss the terms of peace, the Sith Empire launched an unexpected assault on the Republic capital world of Coruscant.

Following the Sacking of Coruscant, the victorious Empire forced the Republic into a highly disadvantageous agreement. The Treaty forced the Republic to withdraw their troops and Jedi forces and abandon many long-time allies and outlying systems to their enemy. The result was an uneasy peace which allowed the Sith time to consolidate their growing power.

Source: Wookiepedia.com