Complex sentence: During the French Revolution, the National Assembly decreed that the Louvre should be used as a museum, to display the nation's masterpiec on 10 August 1793 with an exhibition of 537 paintings, the majority of the works being royal and confiscated church property.
Split into simpler sentences: During the French Revolution, the National Assembly decreed that the Louvre should be used as a museum, to display the nation's masterpieces. The museum opened on 10 August 1793 with an exhibition of 537 paintings, the majority of the works being royal and confiscated church property.