Era
20th century
34
1939-1945
29
1859-1916
16
1900-1999
12
1863-1920
9
1866-1939
8
1853-1909
6
1880-1948
6
1887-1957
6
Warsaw Ghetto Uprising, 1943
6
1860-1951
5
1902-1994
5
1933-1945
5
1939 - 1945
5
19th century
5
1872-1959
4
1880-1957
4
1900-1944
4
1901-1969
4
1904-1991
4
1905-1980
4
1945-1955
4
German occupation, 1940-1945
4
German occupation, 1941-1944
4
1873-1962
3
1906-1962
3
1906-2001
3
1913-2010
3
1917-1948
3
1918-1945
3
1948-1967
3
1564-1616
2
168 B.C.-135 A.D
2
1816-1850
2
1835-1917
2
1858-1922
2
1877-1942
2
1891-1967
2
1894-1974
2
1899-
2
1905-1979
2
1911-1998
2
1918-
2
1923-2016
2
1933 - 1955
2
1934-
2
1948-
2
Rebellion, 66-73
2
-1937
1
-1942 or 1943
1
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