1918-1945 21 1939-1945 16 20th century 12 1945- 11 Occupation, 1939-1945 10 Revolution, 1830-1832 8 1945-1980 7 1900-1945 6 Partition period, 1763-1796 6 1900-1999 5 1860-1941 4 1914-1918 4 Revolution, 1775-1783 4 Wars of 1918-1921 4 1648-1668 3 1746-1 3 1763-1796 3 John II Casimir, 1648-1668 3 (1860-1941) 2 1629-1696 2 1746-1817 2 1747-1779 2 1796-1918 2 1830-1864 2 1864-1918 2 1884-1964 2 18th century 2 1917- 2 1918-1921 2 1980- 2 19th century 2 John III Sobieski, 1674-1696 2 To 1795 2 (1783-1840) 1 (1881-1943) 1 1587-1632 1 1611-1667 1 1669?-1736 1 1674-1696 1 1730-1816 1 1732-1 1 1743-1826 1 1747-1 1 1748-1779 1 1759-1848 1 1783-1815 1 1793 1 1795-1864 1 1795-1918 1 1796-1945 1 more ...