The Jagiellon Era 1385-1572, was dominated by the union of Poland with Lithuania under the Jagiellon Dynasty, founded by the Lithuanian grand duke Jagiello. The partnership proved profitable for the Poles and Lithuanians, who played a dominant role in one of the most powerful empires in Europe for the next three centuries.
The Polish-Lithuanian Union
Poland's unlikely partnership with the adjoining Grand Duchy of Lithuania, Europe's last heathen state, provided an immediate remedy to the political and military dilemma caused by the end of the Piast Dynasty. At the end of the fourteenth century, Lithuania was a warlike political unit with dominion over enormous stretches of present-day Belarus and Ukraine. Putting aside their previous hostility, Poland and Lithuania saw that they shared common enemies, most notably the Teutonic Knights; this situation was the direct incentive for the Union of Krewo in 1385. The compact hinged on the marriage of the Polish queen Jadwiga to Jagiello, who became king of Poland under the name Władysław II. In return, the new monarch accepted baptism in the name of his people, agreed to confederate Lithuania with Poland. In 1387 the bishopric of Wilno was established to convert Władysław's subjects to Roman Catholicism. (Eastern Orthodoxy predominated in some parts of Lithuania.) From a military standpoint, Poland received protection from the Mongols and Tatars, while Lithuania received aid in its long struggle against the Teutonic Knights.
The Polish-Lithuanian alliance exerted a profound influence on the history of Eastern Europe. Poland and Lithuania would maintain joint statehood for more than 400 years, and over the first three centuries of that span the "Commonwealth of Two Nations" ranked as one of the leading powers of the continent.
The association produced prompt benefits in 1410 when the forces of Poland-Lithuania defeated the Teutonic Knights in battle at Grunwald (Tannenberg), at last seizing the upper hand in the long struggle with the renegade crusaders. The new Polish Lithuanian dynasty, called "Jagiellon" after its founder, continued to augment its holdings during the following decades. By the end of the fifteenth century, representatives of the Jagiellons reigned in Bohemia and Hungary as well as Poland-Lithuania , establishing the government of their clan over virtually all of Eastern Europe and Central Europe. This farflung federation collapsed in 1526 when armies of the Ottoman Empire won a crushing victory at the Battle of Mohács (Hungary), wresting Bohemia and Hungary from the Jagiellons and installing the Turks as a menacing presence in the heart of Europe.
The "Golden Age" of the Sixteenth Century
The Jagiellons never recovered their hegemony over Central Europe, and the ascendancy of the Ottomans foreshadowed the eventual subjection of the entire region to foreign rule; but the half century that followed the Battle of Mohács marked an era of stability, affluence, and cultural advancement unmatched in national history and widely regarded by Poles as their country's golden age.
Poland-Lithuania as a European Power
The Teutonic Knights had been reduced to vassalage, and despite the now persistent threats posed by the Turks and an emerging Russian colossus, Poland-Lithuania managed to defend its status as one of the largest and most prominent states of Europe. The wars and diplomacy of the century yielded no dramatic expansion but shielded the country from significant disturbance and permitted significant internal development. An "Eternal Peace" concluded with the Ottoman Turks in 1533 lessened but did not remove the threat of invasion from that quarter.
A lucrative agricultural export market was the foundation for the kingdom's wealth. A population boom in Western Europe prompted an increased demand for foodstuffs; Poland-Lithuania became Europe's foremost supplier of grain, which was shipped abroad from the Baltic seaport of Gdansk. Aside from swelling Polish coffers, the prosperous grain trade supported other notable aspects of national development. It reinforced the preeminence of the landowning nobility that received its profits, and it helped to preserve a traditionally rural society and economy at a time when Western Europe had begun moving toward urbanization and capitalism.
The Government of Poland-Lithuania
In other respects as well, the distinctive features of Jagiellonian Poland ran against the historical trends of early modern Europe. Not the least of those features was its singular governmental structure and practice. In an era that favored the steady accumulation of power within the hands of European monarchs, Poland-Lithuania developed a markedly decentralized system dominated by a landed aristocracy that kept royal authority firmly in check. The Polish nobility, or szlachta, enjoyed the considerable benefits of landownership and control over the labor of the peasantry. Nobles were not the masters of life and death of the peasentry, but peasants could not leave the village without permission of village' s noble owner. The szlachta included 7 to 10 percent of the population, making it a very large noble class by European standards. The nobility manifested an impressive group solidarity in spite of great individual differences in wealth and standing. Over time, the gentry introduced a series of royal concessions and guarantees that vested the noble parliament, or Sejm, with decisive control over most aspects of statecraft, including exclusive rights to the making of laws.
In 1505 Sejm concluded that no new law could be established without the agreement of the nobility (the Nihil Novi act). King Alexander Jagiellon was forced to agree to this settlement. The Sejm operated on the principle of unanimous consent, regarding each noble as irreducibly sovereign. In a further safeguard of minority rights, Polish usage sanctioned the right of a group of gentry to form a confederation, which in effect constituted an uprising aimed at redress of grievances. The nobility also possessed the crucial right to elect the monarch, although the Jagiellons were in practice a hereditary ruling house in all but the formal sense. In fact, Jagiellons had to give priviliges to the nobles to encourage them to elect their sons to be the successors. Those priviliges reduced king's power. King Sigismund II Augustus was the last of Jagiellon dynasty; he had no sons. The prestige of the Jagiellons and the certainty of their succession supplied an element of cohesion that tempered the disruptive forces built into the state system.
In retrospect historians frequently have derided the idiosyneratic, delicate governmental mechanism of Poland-Lithuania as a recipe for anarchy. Although its eventual breakdown contributed greatly to the loss of independence in the eighteenth century, the system worked reasonably well for 200 years while fostering a spirit of civic liberality unmatched in the Europe of its day. The host of legal protections that the nobility enacted for itself prefigured the rights generally accorded the citizens of modern democracies, and the memory of the "golden freedoms" of Poland-Lithuania is an important part of the Poles' present-day sense of their tradition of liberty. On the other hand, the exclusion of the lower nobility from most of those protections caused serious resentment among that largely impoverished class, and the aristocracy passed laws in the early sixteenth century that made the peasants virtual slaves to the flourishing agricultural enterprises.
Poland-Lithuania in the Reformation Era
In modern eyes, the most saliently liberal aspect of Jagiellon Poland is its exceptional toleration of religious dissent. This tolerance prevailed in Poland even during the religious upheavals, war, and atrocities associated with the Protestant Reformation and its repercussions in many parts of sixteenth-century Europe. The Reformation arrived in Poland between 1523 and 1526. The small Calvinist, Lutheran, and Hussite groups that sprang up were harshly persecuted by the Roman Catholic Church in their early years. Then in 1552 the Sejm suspended civil execution of ecclesiastical sentences for heresy. For the next 130 years, Poland remained solidly Roman Catholic while refusing to repress contending faiths and providing refuge for a wide variety of religious nonconformists.
Such broad-mindedness derived as much from practical necessity as from principle, for Poland-Lithuania governed a populace of remarkable ethnic and religious diversity, embracing Roman Catholics, Eastern Orthodox, Protestants, and numerous non Christians. In particular, after the mid-sixteenth century the Polish lands supported the world's largest concentration of Jews, whose number was estimated at 150,000 in 1582. Under the Jagiellons, Jews suffered fewer restrictions in Poland-Lithuania than elsewhere in Europe while establishing an economic niche as tradesmen and managers of noble estates.
The Polish Renaissance
The sixteenth century was perhaps the most illustrious phase of Polish cultural history. During this period, Poland-Lithuania drew great artistic inspiration from the Italians, with whom the Jagiellon court cultivated close relations. Styles and tastes characteristic of the late Renaissance were imported from the Italian states. These influences survived in the renowned period architecture of Kraków, which served as the royal capital until that distinction passed to Warsaw in 1611. The University of Kraków gained international recognition as a cosmopolitan center of learning, and in 1543 its most illustrious student, Nicolaus Copernicus (Mikolaj Kopernik), literally revolutionized the science of astronomy.
The period also bore the fruit of a mature Polish literature, once again modeled after the fashion of the West European Renaissance. The talented dilettante Mikolaj Rej was the first major Polish writer to employ the vernacular, but the elegant classicist Jan Kochanowski (1530-1584) is acknowledged as the genius of the age. Accomplished in several genres and equally adept in Polish and Latin, Kochanowski is widely regarded as the finest Slavic poet before the nineteenth century.
The Eastern Regions of the Realm
The population of Poland-Lithuania was not overwhelmingly Catholic or Slavic. This circumstance resulted from the federation with Lithuania, where ethnic Poles were a distinct minority. In those days, to be Polish was much less an indication of ethnicity than of rank; it was a designation largely reserved for the landed noble class, which included members of Polish and non-Polish origin alike. Generally speaking, the ethnically non Polish noble families of Lithuania adopted the Polish language and culture. As a result, in the eastern territories of the kingdom a Polish or Polonized aristocracy dominated a peasantry whose great majority was neither Polish nor Catholic. This bred resentment that later grew into separate Lithuanian, Belorussian, and Ukrainian nationalist movements.
In the mid-sixteenth century, Poland-Lithuania sought ways to maintain control of the diverse kingdom in spite of two threatening circumstances. First, since the late 1400s a series of ambitious tsars of the house of Rurik had led Russia in competing with Poland-Lithuania for influence over the Slavic territories located between the two states. Second, Sigismund II Augustus (1548-1572) had no male heir. The Jagiellon Dynasty, the strongest link between the halves of the state, would end after his reign. Accordingly, the Union of Lublin of 1569 transformed the loose federation and personal union of the Jagiellonian epoch into the Polish-Lithuanian Commonwealth, deepening and formalizing the bonds between Poland and Lithuania.