Golden Liberty
Besides war, the Commonwealth suffered the Great Northern War plague outbreak and famine (the worst caused by the Great Frost of 1709). These calamities resulted in the loss of approximately 40% of the country's inhabitants. Foreign powers, especially Russia, became dominant players in the domestic politics of the Commonwealth. Numerous factions among the nobility, controlled and manipulated by the powerful Magnates of Poland and Lithuania, themselves often in conflict, used their "Golden Liberty" to prevent reforms. Some Lithuanian clans, such as the Radziwiłłs, counted among the most powerful of Commonwealth nobles.