The French Constitution of 1791, adopted by the National Assembly on September 3, 1791, established France's first written constitution after the collapse of absolute monarchy. The constitution transformed France into a constitutional monarchy, creating a Legislative Assembly and limiting King Louis XVI's authority. It implemented civil equality for male citizens meeting tax qualifications and established separation of powers. The constitution lasted less than a year as the French Revolution continued, but represented a shift from absolutism toward constitutionalism in Europe.