Era
20th century
210
1900-1999
93
1939-1945
90
19th century
58
To 1572
46
1918-1945
32
Piast period, 960-1386
32
1415-1480
23
1945-1980
21
17th century
20
1989-
20
To 1500
20
1939 - 1945
19
Occupation, 1939-1945
18
1945-
17
20e siècle
17
21st century
16
To 960
16
16th century
15
1867-1935
15
18th century
15
1980-1989
14
1066-1145
13
1800-1899
13
1800-1999
12
1900 - 1999
12
1786-1861
11
960-1386
9
Since 1900
9
Since 1945
9
To 1795
9
approximately 1160-1223
8
1700-1799
7
19 w
7
Revolution, 1863-1864
7
1990-
6
Geschichte
6
Uprising, 1944
6
1733-1796
5
1789-1900
5
1796-1918
5
1877-1943
5
1938-
5
Partition period, 1763-1796
5
Revolution, 1917-1921
5
Since 1989
5
1500-1599
4
1648-1654
4
1648-1775
4
1795-1864
4
more ...