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. 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 induced 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. 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. 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 PolandLithuania 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.

Data as of October 1992