Era
20th century
234
1900-1999
130
Occupation, 1939-1945
93
Warsaw Ghetto Uprising, 1943
44
1918-1945
42
1939-1945
42
19th century
32
1945-1980
23
17th century
21
1939 - 1945
21
1980-1989
20
Uprising, 1944
19
1864-1918
15
1945-
14
18th century
12
1989-
12
John III Sobieski, 1674-1696
11
1800-1899
10
21st century
10
Partition period, 1763-1796
10
1796-1918
8
1945-1989
8
1795-1864
7
To 1500
7
1629-1696
6
1867-1935
6
German occupation, 1941-1944
6
Revolution, 1830-1832
6
To 1572
6
To 1795
6
1572-1763
5
16th century
5
1700-1799
5
1900 - 1999
5
1900-1944
5
1943
5
Elective monarchy, 1572-1763
5
Revolution, 1775-1783
5
Sigismund III, 1587-1632
5
Stanislaus II Augustus, 1764-1795
5
1595-1648
4
1746-1817
4
1800-1999
4
1900-2099
4
1917-1991
4
1933-1945
4
Casimir IV, 1447-1492
4
Revolution, 1905-1907
4
Since 1900
4
1600-1699
3
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