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.

Data as of October 1992