The history of lands that currently constitute the Silesian Voivodeship (historically these are terrains of Silesia and Lesser Poland) is very turbulent. The region of Silesia has been bonded with Poland since 990, yet over the following centuries has been passed from hands to hands due to political and economic benefits its rulers would gain. Unique culture and customs of Silesia had been shaped mostly by Polish, German and Czech influences. In 9th century the area had been inhabited by Opolans, Vistulans and Golensizi tribes. No later than 990 A.D., when Polans were forming their state, these tribes were still independent. The rule over them had been taken by Mieszko I. For several centuries Silesia had been a subject of dispute between the Polish and Czech states. During the feudal fragmentation period, the western part of today’s voivodeship (including Racibórz and Cieszyn) has been incorporated into the province of Silesia, while the remaining lands to the Seniorate Province. In the late 12th c., Bytom and Siewierz, together with western Silesia, had been integrated into the Duchy of Racibórz and Duchy of Opole, while Częstochowa and Będzin remained in the Duchy of Kraków. In 15th and 16th c. the area underwent further fragmentation into smaller duchies. In 1526, Silesia and Bohemia (Czech state) went under the rule of Archduchy of Austria and the lands were governed by the Piast dynasty, subjects of the Habsburg Monarchy.