Once a thriving merchant realm of independent city- states united only by a lust for gold, Sembia is now in turmoil, something is eating at it from the inside. This long tradition of trade and commerce remains the central unifying principal for this vassal state; Sembia is the trade portal to the rest of Faerûn. The free cities of Urmlaspyr and Daerlun are only nominally under Sembian control. After winning its war against Sembia forty years ago, Cormyr insisted that they remain neutral. claimed Sembia as a free protectorate following the disastrous civil war of the mid-1370s. In the years leading up to the Spellplague, that was the public face of things, at least. In reality, Sembia was utterly under the thumb of the Twelve Princes by the year 1380 DR.
The Twelve Princes of Shade