How did the early Polish state develop between the Oder River and the Vistula River?

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The early Polish state emerged between the Oder and Vistula rivers through the consolidation of West Slavic tribes by the Piast dynasty. Initially, these tribes were organized into clans led by chieftains, but dukes transformed this tribal structure into a territorial unit by utilizing an armed retinue known as a druĆŒyna.21

Two primary tribes were instrumental in this development:
* The Polanie: Centered around the fortified settlement of Gniezno, they became the core of the nascent state.21
* The Wiƛlanie: Located near Kraków, they were eventually brought under the control of the Polanie ruler Mieszko I.21

Mieszko I, recognized as the founder of the state, solidified its position by adopting Roman Catholicism in 966, which integrated Poland into Western civilization. By the time of his death, the state stretched from the Baltic Sea to the Carpathian Mountains. His successor, BolesƂaw I, further expanded this influence, securing sovereign status and an independent ecclesiastical organization that included bishoprics in WrocƂaw and KoƂobrzeg.21