Era
20th century
31
1900-1999
16
1990-
11
Quaternary
11
19th century
10
1871-1954
9
18th century
8
1945-
6
1945-1981
6
1918-1945
5
1939-1945
5
From 2 million years ago
5
16th century
4
1807-1872
4
1945-1980
4
Tertiary
4
World War, 1939-1945
4
1981-1990
3
Occupation, 1939-1945
3
Partition period, 1763-1796
3
Pleistocene
3
active 2nd century
3
1700-1799
2
17th century
2
1800-1999
2
1802-1889
2
1861-1930
2
1879-1933
2
1881-1959
2
1884-1929
2
1900 - 1999
2
1918 - 1945
2
1923-2011
2
1949-
2
1951-
2
1989-
2
20e siècle
2
From 10 thousand to 2 million years ago
2
From 10 thousand years ago
2
From 2 to 65 million years ago
2
Holocene
2
Mesozoic
2
Nineteen twenties
2
Since 1945
2
Triassic
2
active 12th century
2
starożytność
2
(1802-1889)
1
(1807-1872)
1
(1851-1911)
1
more ...