Complex sentence: The Polish Catholic Church, led by Cardinal August Hlond until his death in 1948, also functioned in opposition to the regime, coping also with difficulties related to the lack of permanent Polish church structure in the Recovered Territories.
Split into simpler sentences: The Polish Catholic Church, led by Cardinal August Hlond until his death in 1948, took an anti-regime stand. It also coped with difficulties related to the lack of permanent Polish church structure in the Recovered Territories.