From the back of the Book:
In the southwest corner of Faerun, a thousand miles south of Waterdeep on the great Trade Way road, lie the three lands known collectively as the Empires of the Sands. They are harsh lands that have produced tough people - proud, fierce, and hard-working.
The Empires of the Sands are now fully detailed for your roleplaying campaign. The cultures, personalities, economics, cities, towns, and wilderness are described for an AD&D campaign of any size or level.