Domestically, he integrated and centralized the reunited Polish state and helped develop what was considered the "Crown of the Polish Kingdom": the state within its actual boundaries, as well as past or potential boundaries.
Siseriiklikult integreeris ta ja tsentraliseeris taasühendatud Poola riigi ning aitas arendada seda, mida peeti "Poola kuningriigi krooniks": riik oma tegelikes piirides, samuti endised või potentsiaalsed piirid.