From the Back Cover:
Danger knows no borders
Secure your traveling papers and jump aboard the lightning rail as it hurtles across the Five Nations. Once united as the kingdom of Galifar then sundered by the Last War, Aundair, Breland, the Mournland, Karrnath, and Thrane now enjoy a tenuous peace. Regardless of your destination, ready your weapons, as well as your wits--intrigue, opportunity, risk, and reward await at every stop.
Inside this book, you'll find everything you need to adventure in the mighty kingdoms that form the heart of Khorvaire:
Comprehensive overviews of each kingdom, including its postwar status, government, and economy, as well as important locations, communities, organizations, and NPCs
Detailed, full-color maps of each nation and its capital city
Spells and magic items developed during the Last War
Descriptions of battlefields, ruins, cities, and other notable places
Information for creating characters who hail from each of the Five Nations
New monsters and monster templates