The Polish-Lithuanian Commonwealth

Ambassadors in fur caps

Drafted from Fletcher, The History of Poland, from the Earliest Period to the Present Time (1836)formation

Sigismund II Augustus, the king under whom Poland and Lithuania had merged into a single Commonwealth in 1569, died in 1572 without an heir. For the first time, the nobility of both nations faced choosing a monarch from nothing rather than receiving one by inheritance - and they turned the crisis into a permanent constitutional principle rather than a one-time emergency.

A crown with conditions attached in advance

Before any candidate could take the throne, the assembled nobility revised the coronation oath into a document known as the Pacta Conventa, binding whoever was elected to convene the Sejm every two years, to share power rather than rule independently, and - in the accompanying Warsaw Confederation - to guarantee religious toleration among the electors themselves, whatever faith the individual noble professed. The king would remain Roman Catholic by requirement, but his own subjects, for the first time in the region, were formally protected from being compelled into religious conformity by each other.

A choice that startled Paris

The nobility settled on Henry, Duke of Anjou and brother of the reigning king of France, over a rival Habsburg candidate. When the Polish embassy arrived in Paris to announce the decision, eyewitnesses could not stop describing the spectacle: ambassadors in long robes, fur caps, sabres, bows and quivers, their jewelled sword-scabbards and lavishly decorated horses drawing crowds who had never seen anything resembling this combination of Eastern dress and evident aristocratic wealth. Henry himself would not stay in Poland long - he abandoned the throne within months to claim the French crown instead - but the precedent he was elected under did not depend on any individual king's staying power.

An assembly that could bind its own king before he arrived

What the 1573 election actually established was that the Commonwealth's throne belonged, in the most literal sense, to its electors rather than to any dynasty. Every king from Henry onward would take the same office on the same terms: chosen by a nobility that had already written down, in advance, exactly how much power he would not be allowed to hold.

Badly encamped

Drafted from Fletcher, The History of Poland, from the Earliest Period to the Present Time (1836)peak

In July 1683 an Ottoman army under the grand vizier Kara Mustafa laid siege to Vienna with, by contemporary counts, well over a hundred thousand men and more than three hundred pieces of artillery. The Holy Roman Emperor Leopold fled the city with his pregnant wife, sleeping one night in a wood on a bundle of straw, and left his capital's defence to a garrison of barely more than ten thousand men and armed citizens under Count Starhemberg.

A siege the defenders expected to lose

By late August the garrison's own officers estimated they could not survive a determined general assault more than three additional days. Starhemberg, who had sworn not to surrender the city while a drop of his blood remained, sent a message consisting of nothing but the words "no more time to lose." The vizier, confident of forcing a surrender rather than a costly storm, had not even confirmed that a relief force was approaching until it was almost in his own camp.

A king who read the ground before the battle

That relief force was led by John III Sobieski, king of Poland since 1674, who marched his own troops over a mountain ridge so difficult that the accompanying German forces had to abandon their artillery rather than drag it across; the Poles alone managed to bring twenty-eight guns against the Ottomans' three hundred. From Mount Kahlenberg, looking down on an Ottoman camp of extraordinary scale and evident disorganisation, Sobieski dismissed the spectacle outright: this man, he told his own officers, is badly encamped, and knows nothing of war - they would certainly beat him.

A battle won on both morale and terrain

Sobieski's read of the situation proved exact. Disease, a prolonged siege, and a superstitious conviction among the Ottoman rank and file that they had transgressed by acting as the aggressors had already sapped the army's discipline before the relief force ever engaged; even elite janizary units openly mocked their own commander's caution. The combined Polish and imperial forces broke the siege decisively, and Sobieski's own cavalry charge down from the heights settled the field. Vienna survived, central Europe's frontier with the Ottomans shifted decisively in the following campaigns, and Poland-Lithuania had delivered the single most celebrated military feat of its own existence

• gaining, in return, remarkably little that outlasted the campaign itself.

One man's absence

Drafted from Fletcher, The History of Poland, from the Earliest Period to the Present Time (1836)contraction

The Sejm's founding principle, that a diet's decisions required unanimous consent, had existed on paper for decades before anyone actually acted on its most extreme implication. That changed in 1652, under King John Casimir, when a deputy named Sicinski left a session before its business concluded, and his simple absence was accepted as grounds to nullify everything the diet had done that year - since unanimity, by definition, could no longer be reached without him.

A precedent nobody could undo

The ruling was, by later description, an absurd one - but absurd precedents that are easy to imitate rarely stay isolated. Once a single deputy's walkout could dissolve an entire session's work, any deputy bribed, pressured, or simply convinced of his own righteousness could do the same, and the Commonwealth's legislature increasingly found itself unable to pass anything its most stubborn member objected to. The liberum veto, meant to protect each noble elector's own liberty, instead protected every session against ever concluding one.

A king's own warning, decades early

John Casimir himself, addressing the same body whose paralysis he had watched take shape, delivered what later readers would treat as an eerily precise prophecy: Russia would seize Lithuania as far as the Bug and the Vistula, Brandenburg would press its own claim on Greater Poland, and Austria would turn toward Kraków and its neighbouring provinces. He hoped, he told the assembly, to be proven a false prophet.

The first bite

He was not. In 1772, Russia, Prussia and Austria coordinated a single agreement carving substantial territory from the Commonwealth on almost exactly the lines Casimir had named more than a century before. The Sejm that convened afterward, its members bribed, coerced or simply outmatched, ratified the loss rather than resisting it - the same institution whose own unanimity rule had once been designed to protect Poland-Lithuania's sovereignty now formalising the first substantial cut into it.

A constitution and an oath that came too late

Drafted from Fletcher, The History of Poland, from the Earliest Period to the Present Time (1836)end

By 1791 the Commonwealth's reformers understood exactly what had crippled their own state and moved, in a single dramatic session, to dismantle it. Marshal Malachowski opened the diet by having a report on Russia's own hostile designs read aloud in full, and when a deputy called on King Stanislaw August Poniatowski, as the one figure not bound by factional interest, to propose a remedy, the king revealed a plan he had been quietly preparing for exactly this moment.

An oath sworn on the spot

The diet did not merely debate the king's proposal - it adopted it immediately, with a deputy calling for the king and the whole assembly to swear allegiance to the new constitution before opposition could organise. Stanislas took the oath from the Bishop of Kraków on the spot, declared he would never swerve from it, and led all but twelve of the assembled diet in procession to the cathedral to repeat it. The liberum veto and the noble confederacies that had exploited it were abolished outright; a majority vote, not unanimity, would govern the Sejm from that day forward.

Praise from every court but the ones that mattered

The new constitution drew congratulations from courts and reformers across Europe - even the pope offered his approval, and English politicians spoke of it in the same terms as their own most cherished liberties. None of that admiration translated into protection. Russia and Prussia, the two powers whose interests the reform most directly threatened, saw a Commonwealth capable of governing itself as a Commonwealth no longer safe to leave standing at all.

An uprising fought under an honest oath

A national rising under Tadeusz Kosciuszko in 1794 delayed the end without preventing it. Kosciuszko himself swore before his own countrymen never to turn the authority entrusted to him against a fellow citizen, using it only to recover the nation's independence - an oath, this account insists, he kept in full even as the cause he led collapsed under Russian and Prussian arms.

A pensioner signs the end

The Third Partition in 1795 divided what remained of the Commonwealth entirely among Russia, Prussia and Austria, leaving no Polish or Lithuanian territory outside their control. Stanislas, already reduced to dependence on the powers that had dismembered his own kingdom, was compelled by the Russian ambassador to travel to Grodno, where on 25 November he signed a formal act of abdication in exchange for a pension and a promise that his debts would be settled. He died three years later in Saint Petersburg, the last king of a state that a constitution written with genuine conviction had not been given enough time to save.