 Complete the following phrase:  On 30 August 1721, the Treaty of Nystad formalized Russias acquisition of the Baltic provinces and the respective capitulations in articles IX, X, XI and XII. Sweden had to relinquish her claims forever, and strike the provinces from the royal title. Peter the Great in turn changed his title from tsar to imperator, and amended it with kniaz Estlandskyi, Livlandskyi i Korelskyi, i.e. duke of Estonia, Livonia and Karelia. However, reconquest of her former Baltic dominions remained a Swedish war aim in the century following the Great Northern War, since these territories were of high strategic importance and Livonia had been a major Swedish source for grain. Yet, none of the respective attempts during the Russo-Swedish wars of 17411743, 17881790 and 