Complex sentence: Fedorovych addressed the Ukrainian commoners with several Universals calling upon everyone to join his uprising against the Polish usurpers; the turbulence spread over the nearby territories, with many Cossacks and peasants rising against the local nobles and Jews; casualties were rising on both sides.
Split into simpler sentences: Fedorovych addressed the Ukrainian commoners with several Universals calling upon everyone to join his uprising against the Polish usurpers. The turbulence spread over the nearby territories, with many Cossacks and peasants rising against the local nobles and Jews; casualties rose on both sides.