In 1569 the Union of Lublin granted the southern Lithuanian-controlled Ruthenian voivodeships of Volhynia, Podolia, Bracław and Kiev—to the Crown of Poland under the agreement forming the new Polish–Lithuanian Commonwealth. The Kingdom of Poland already controlled several Ruthenian lands which formed the voivodeships of Lviv and Belz. Although the local nobility was granted full rights within the Rzeczpospolita, their assimilation of Polish culture alienated them from the lower classes. It was especially important in regard of powerful and traditionally influential great princely families of ruthenian origins, among them Wiśniowieccy, Czartoryscy, Ostrogscy, Sanguszkowie, Zbarascy, Koreccy and Zasławscy, which acquired even more power and were able to gather more lands, creating huge latifundia. This szlachta, along with the actions of the upper-class Polish Magnates, oppressed the lower-class Ruthenians, with the introduction of Counter-Reformation missionary practices and the use of Jewish arendators to manage their estates.