What is "tilea"

In the fictional universe of Warhammer Fantasy, Tilea is the region of the Warhammer world roughly analogous with that of the Roman Empire, yet is also home to mercenaries of many races. Men are the most common race in the land as the rulers of the various City States, but other races, such as the Dwarfs and Ogres, fight for the armies of the so-called Merchant Princes who rove the land, and the more archaic settlements of Fauns and Centaurs are also found round and about. The Dogs of War army in Warhammer Fantasy, as yet not having received an Army Book for 6th (nor 7th or 8th) Edition, represents the armies of the various Merchant Princes and are composed entirely of hired mercenaries, whereas the main Tilean nation has not received an official army book and has relied upon unnofficial versions.