Polish-Lithuanian Commonwealth Adopts May 3 Constitution
In the late 18th century, the Polish-Lithuanian Commonwealth confronted existential threats from neighboring powers Russia, Prussia, and Austria amid internal weaknesses like the liberum veto that paralyzed governance. Reform-minded nobles and King Stanisław August Poniatowski pushed for modernization through the Four-Year Sejm. On May 3, 1791, the Sejm in Warsaw proclaimed the Government Act, Europe's first modern written constitution and the world's second after the United States. It established a constitutional monarchy, abolished the liberum veto, strengthened the executive with a hereditary throne, expanded rights for townspeople, and provided pathways for peasant protections. The document was swiftly ratified amid public celebrations in Warsaw. Russian opposition soon triggered intervention, leading to the Second Partition of Poland just two years later.
