December 5, 1791
English riots regarding Joseph Priestley
Major battle between two Maori coalitions c. 1807
1791 battle during during the Northwest Indian War
July 2, 1791 treaty between the U.S. government and the Cherokee tribes
1791 battle of the Russo-Turkish War (1787–1792)
1791 Surprise attack on Native American village by U.S. militia.
1791 battle of the Third Anglo-Mysore War