Despite the shift of the Silesia province from Poland to Bohemia and the treaties mentioned above, medieval lawyers of the Kingdom of Poland created a specific claim to all formerly Polish provinces that were not reunited with the rest of the country in 1320. It employed the theory of the "Corona Regni Poloniae" according to which the state (the Crown) and its interests were no longer strictly connected with the person of the monarch. Because of that no monarch could effectively renounce his claims to any of the territories that were historically and/or ethnically Polish. Those claims were reserved for the Crown, which in theory still covered all of the territories that were part of or dependent on the Polish Crown in 1138.