The 1848 Constitution of Prussia was imposed on the Kingdom of Prussia by King Frederick William IV on 5 December 1848 in response to demands that arose during the German revolutions of 1848–1849. Although the Constitution was not the result of an agreement between the King and the Prussian National Assembly as originally intended, it included a list of fundamental rights, the introduction of jury courts, limitations on the monarch's powers and a mandate to ensure legal certainty.
In spite of the liberal clauses in the Constitution, Prussia was still far from a democratic state. The king had an absolute veto over laws, which restricted the separation of powers. It was possible for the monarch to circumvent the judiciary, and the military could be described as a state within the state. All adult male citizens regardless of class had the right to vote, but the three-class franchise that weighted votes based on the amount of taxes paid significantly limited the political voice of the middle and lower classes.
Although amended many times, the basic framework of the 1848 Prussian Constitution remained in place until 1918, encompassing the periods when Prussia was part of the North German Confederation (1866–1871) and the German Empire (1871–1918).