Era
20th century
12
1900-1999
11
1918-1945
10
1939-1945
10
Wars of 1918-1921
9
1763-1796
7
Partition period, 1763-1796
7
1648-1668
6
John II Casimir, 1648-1668
6
Occupation, 1939-1945
6
Revolution, 1775-1783
6
1864-1918
5
1900-1945
5
1918-1921
5
1747-1779
4
1763-1796 (Partage)
4
1945-
4
Revolution, 1830-1832
4
1867-1935
3
1918-1921 (Guerres)
3
1939-1945 (Occupation)
3
Since 1917
3
(1783-1840)
2
(1860-1941)
2
1587-1632
2
1611-1667
2
1674-1696
2
1746-1817
2
1775-1783 (Révolution)
2
1793
2
1795-1864
2
1795-1918
2
1830-1832
2
1830-1832 (Révolution)
2
1830-1864
2
1860-1941
2
1895-1992
2
19 w
2
1914-1918
2
1917-
2
1917-1921
2
1944-1989 (Polska Ludowa)
2
1945-1989
2
20e siècle
2
Geschichte 1772-1972
2
John III Sobieski, 1674-1696
2
Second partition, 1793
2
Sigismund III, 1587-1632
2
To 1795
2
(1905-1982)
1
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