Silesia

Silesia' (czech Slezsko, german Schlesien, polish Śląsk) is a historical region in Central Europe. Nowaday Silesia is divided between Poland (main part), Czechia and Germany. It has two parts - Lower Silesia and Upper Silesia. Esteemed center of Silesia is Wrocław.

Duchy of Silesia
Silesian region was border region between Duchy of Bohemia and Duchy of Poland. In 1138 polish duke Bolesław III, shortly before his death, divided his realm among his sons. Silesia was given to Władysław II Wygnaniec, first polish senior. But soon his brothers disagree with his rule and in 1146 he was forced to exile. The Silesia an senior title fall on Bolesław IV Kędzierzawy. But Władysław turned to holy roman emperor Friedrich I Barbarossa. He answered his call and call of his sons and forced Bołeslaw to return Silesia in 1163 to Władysław line - sons Bolesław I Wysoki and Mieszko I Plątonogi. But the agreement of brothers came to swift end. Bolesław Wysoki was driven from his land, further conflict was ward off by mutual treaty. Mieszko keeps southern part of Silesia (Duchy of Teschen), Bolesław got northern part (Duchy of Wrocław), theirs brother Konrad Laskonogi Duchy of Głogów and Bolesław's son Jarosław received central part (Duchy of Opole).

Partition of Silesia
After the deaths of Jarosław of Opole and Konrad Laskonogi, the Silesia was divided into to main parts - Upper (ducatus Opolie) and Lower (ducatus Slezie) parts. This parts dilapidated to smaller duchies, because each duke splits his realm among his sons. Overall there was over 30 different independent duchies.