Poland-Lithuania Shrinks

From Poland: The First Thousand Years, by Patrice M. Dabrowski (Cornell University Press, 2014), Kindle pp. 302-304:

The population of the Grand Duchy [of Lithuania] had demonstrated its commitment to the Commonwealth, of which they considered themselves citizens. Perhaps a creative extension of citizenship was the answer to the Cossack debacle? Not relying on divine intercession, the nobles of the Commonwealth strove to put an end to the civil war with the Cossacks via diplomatic means. They entered into negotiations with the new leader of the Cossacks, Ivan Vyhovsky. Already earlier it had become clear that his predecessor Khmelnytsky was not entirely satisfied with the outcome of Pereiaslav. Centralizing and humiliating Russian rule proved very different from the genuine autonomy the Cossacks had expected. After all, not all Cossacks were uneducated; whether they had studied at the Mohyla Academy, elsewhere in the Commonwealth, or even in the West, they had been exposed to ideas at great odds with the autocracy they now encountered. Even the Orthodox clergy of the Cossack lands, especially Kyiv, were unhappy at being subordinated to Moscow. Among other things, this dissonance and the resulting dissatisfaction led Khmelnytsky to join the other potential partitioners of Poland—Sweden, Transylvania, and Brandenburg—at the end of 1656.

After Khmelnytsky’s death in 1657, Vyhovsky reached agreement with the Commonwealth. The two parties convened in a town of the Kyiv palatinate near the border with Russia. Although lying to the east of Pereiaslav, Hadiach (Polish: Hadziacz) notably marked a move westward. The Treaty of Hadiach established the terms of the Cossacks’ return to the Commonwealth—terms that were far better than the Cossacks had ever been offered before.

Signed in 1658, this treaty has been compared to the Union of Lublin, and for good reason. The Commonwealth of Two (Both) Nations would be transformed into a Commonwealth of Three Nations—the third being a newly established Duchy of Ruthenia. Consisting of the former palatinates of Kyiv, Bratslav, and Chernihiv, the Duchy of Ruthenia would be an autonomous entity, on par with the Grand Duchy of Lithuania. Under the leadership of the common king, the Duchy would share a common foreign policy and send its own citizens to the Seym. A certain number of Cossacks would be accepted into the Commonwealth nobility.

The new Duchy would also retain its distinctiveness: executive power would be wielded by the hetman of the Ruthenian army, some thirty thousand strong. The Uniate Church would be disallowed on the Duchy’s territory, where the Orthodox Church would be the favored religion, its higher clergy members of the Senate. The Mohyla Academy would be treated on par with other institutions of higher learning in the Commonwealth.

In short, the Cossacks appear to have successfully won the rights and privileges they had long sought. No longer to be looked down upon, they were to be treated as an equal partner. The Cossacks would be the third “nation” of the Commonwealth—a Ruthenian/Cossack/Orthodox one.

The Seym ratified the Treaty of Hadiach the following year, marking a sea change in the mentality of the Commonwealth’s citizenry, the Polish-Lithuanian nobility. For many Cossacks back in the hetmanate, however, it was too little, too late—at least a decade too late. To be sure, power politics within the hetmanate likely helped to determine the rejection of the proposal. Vyhovsky had been acting in the name of the underage son of Khmelnytsky, Yuri, who now displaced Vyhovsky at the top of the hetmanate. Yet, might the deal still go through—be pushed through? For a moment it looked as though the Poles, who now amassed the largest army in their history—a force of some seventy to eighty thousand, and one that had a string of victories over the Russian and Cossack armies in 1660—would be able to expel the Russians from the Grand Duchy and implement the new arrangement with the Cossacks.

Ultimately, this was not to be. As a result of internal political problems, the Commonwealth was not able to profit from this impressive surge. The terms reached between Russia and the Commonwealth in the armistice of 1667 at Andrusovo were by Commonwealth accounts devastating. The armistice confirmed the Commonwealth’s loss of both the Smolensk region in the north and the Cossack lands to the south, albeit in a novel configuration. The Cossack Hetmanate itself was partitioned between the two states—the dividing line being the Dnieper River. Territories on the right bank of the Dnieper (that is, in the west) were awarded to the Poles, while the left (east) bank came under Russian rule. The Russians also reserved to themselves control over Kyiv, on the right bank of the Dnieper, ostensibly for a two-year period .... The city would never again be part of the Commonwealth. As the famous mathematician and philosopher Gottfried Wilhelm Leibniz observed at the time (albeit from his comfortable vantage point in the west), the “barbaric East” was on the rise.