
During the nearly 900-year reign of the Galifar kings and queens, human-settled lands continued to expand and the powerful dragonmarked houses were set firmly in place. The wondrous Korranberg Library and Sharn, the City of Towers, were established and grew in reputation. The lands of the kingdom of Galifar stretched from the Barren Sea to the Lhazaar Sea, covering every mile of the continent, though the government was only able to maintain reliable control of the central region. The closer one traveled toward the outer edges of the continent, the more undeveloped and uncivilized the land, and its inhabitants, became. These frontiers gave rise to missionaries, settlers, profiteers, and other explorers.
In 894 YK, King Jarot, the last king of Galifar, died. With his death, the kingdom of Galifar collapsed as civil war erupted, sparked by the scions of Jarot as each battled for control of the eroding kingdom. This terrible conflict, which became known as the Last War, lasted just over a century and came to an end with the signing of the Thronehold Accords by the twelve standing nations: Aundair, Breland, Darguun, the Eldeen Reaches, Karrnath, the Lhazaar Principalities, the Mror Holds, Q'barra, the Talenta Plains, Thrane, Valenar, and Zilargo. Other regions formed during the war include Droaam, the Shadow Marches, the Demon Wastes, and the Mournland (which covers the land formerly occupied by the nation of Cyre.)

I really must know what its ISBN is!
The section "A Little History" is (c)Wizards of the Coast and are sourced from their website.