Era
1917-1921
62
Revolution, 1917-1921
46
Since 1917
40
1917-
30
1900-1999
17
1917-1921 (Révolution)
17
20th century
17
German occupation, 1941-1944
9
1648-1654
8
1917-1945
6
1932-1933
6
Famine, 1932-1933
6
Wars of 1918-1921
6
17th century
5
1936-1953
5
1941-1944
4
1941-1944 (Occupation allemande)
4
20e siècle
4
To 1648
4
1600-1699
3
1639-1709
3
1648-1775
3
1932-1933 (Famine)
3
approximately 1594-1657
3
1340-1648
2
1340-1699
2
1600-1654
2
17e siècle
2
1814-1861
2
1859-1943
2
1860-1953
2
1866-1935
2
1879-1926
2
1882-1931
2
1883-1973
2
1895-
2
1900-1976
2
1905-1907
2
1914-1921
2
1917 - 1921
2
1918-1921
2
1918-1921 (Guerres)
2
1921-1944
2
1921-1953
2
1939-1945
2
1939-1991
2
1941-1991
2
1944-1991
2
1945-1991
2
862-1240
2
more ...