 Complete the following phrase:  The Great Northern War of 17001721, a period seen by the contemporaries as a temporary eclipse, may have been the fatal blow that brought down the Polish political system. Stanisław Leszczyński was installed as king in 1704 under Swedish protection, but lasted only a few years. The Silent Sejm of 1717 marked the beginning of the Commonwealths existence as a Russian protectorate: the Tsardom would guarantee the reform-impeding Golden Liberty of the nobility from that time on in order to cement the Commonwealths weak central authority and a state of perpetual political impotence. In a resounding break with traditions of religious tolerance, Protestants were executed during the 