Era
20th century
1900-1999
1,227
20e siècle
627
1918-1945
248
Occupation, 1939-1945
203
20e siècle
201
1945-1980
162
19th century
129
1980-1989
95
1939-1945 (Occupation)
85
21st century
73
1939-1945
59
1800-1999
58
1945-
57
1867-1935
56
1945-1981
51
Since 1900
45
1989-
44
1900 - 1999
40
1981-1989
32
1900-2099
30
Uprising, 1944
30
19e siècle
29
1945-1989
27
1864-1918
21
1900-1945
21
Wars of 1918-1921
21
Warsaw Ghetto Uprising, 1943
20
Uprising, 1956
18
1933-1945
17
1944 (Insurrection)
15
21e siècle
15
1796-1918
10
1864-1939
10
1864-1999
10
1881-1943
10
1900-1944
10
German occupation, 1941-1944
10
World War, 1939-1945
10
1860-1941
9
1918-
9
19e siècle
9
1900-talet
8
1910-2008
8
Geschichte 1900-2000
8
Geschichte 1939-1945
8
March Events, 1968
8
Revolution, 1917-1921
8
18th century
7
1914-1918
7
more ...