Era
1939-1945
497
20th century
326
1900-1999
228
21st century
217
1990-
118
John II Casimir, 1648-1668
82
19th century
80
Occupation, 1939-1945
64
1939 - 1945
62
2000-2099
61
Revolution, 1863-1864
61
Nero, 54-68
58
Primitive and early church, ca. 30-600
57
1945-1980
51
1918-1945
48
1945-
42
1800-1899
40
1980-1989
40
1648-1668
35
1863-1864
33
Uprising, 1944
33
1914-1918
32
Michael Wisniowiecki, 1669-1673
31
20e siècle
30
966 or 967-1025
30
Jagellons, 1386-1572
30
21 w
28
Since 1945
27
17th century
24
To 332 B.C
23
13th century
22
18th century
21
1989-
21
approximately 922-992
19
1798-1855
18
Revolution of 1794
18
30 - 600
17
1386-1572
16
1629-1696
16
1846-1916
16
1970-
16
30-600
16
Vladislaus II Jagiello, 1386-1434
16
1592-1656
15
1043-1081
14
1473-1543
14
1864-1918
14
1864-1925
14
1900 - 1999
14
21e siècle
14
more ...