Era
20th century
360
1900-1999
184
1939-1945
166
Occupation, 1939-1945
93
1939 - 1945
83
1918-1945
75
19th century
66
1980-1989
64
1989-
63
1945-1980
53
Warsaw Ghetto Uprising, 1943
44
1945-
39
1990-
38
17th century
32
21st century
28
18th century
25
Since 1989
24
1945-1989
21
1800-1899
20
Uprising, 1944
19
1981-1990
16
1864-1918
15
1867-1934
14
1933-1945
13
Since 1990
13
To 1500
13
1796-1918
12
1900 - 1999
12
16th century
11
John III Sobieski, 1674-1696
11
1629-1696
10
2000-2099
10
Partition period, 1763-1796
10
1810-1849
9
1867-1935
9
To 1795
9
1572-1763
8
1800-1999
8
1922-
8
1928-
8
1933-1999
8
To 1572
8
1700-1799
7
1795-1864
7
1878-1942
7
1900-2099
7
1926-
7
1943-
7
1945-1981
7
1473-1543
6
more ...