A report on Constitutional monarchy, Constitution of 3 May 1791 and Constitution

The Constitution of 3 May 1791, titled the Governance Act, was a constitution adopted by the Great Sejm ("Four-Year Sejm", meeting in 1788–92) for the Polish–Lithuanian Commonwealth, a dual monarchy comprising the Crown of the Kingdom of Poland and the Grand Duchy of Lithuania.

Constitutional monarchy may refer to a system in which the monarch acts as a non-party political head of state under the constitution, whether written or unwritten.

The Constitution sought to implement a more effective constitutional monarchy, introduced political equality between townspeople and nobility, and placed the peasants under the government's protection, mitigating the worst abuses of serfdom.

Poland developed the first constitution for a monarchy in continental Europe, with the Constitution of 3 May 1791; it was the second single-document constitution in the world just after the first republican Constitution of the United States.

It led to the system of Constitutional Monarchy, with further reforms shifting the balance of power from the monarchy and nobility to the House of Commons.

The Polish–Lithuanian Commonwealth Constitution was passed on May 3, 1791.