Era
1917-1921
75
Revolution, 1917-1921
48
1917-1945
46
1917-
45
Since 1917
43
20th century
28
1939-1945
27
1900-1999
22
1917-1921 (Révolution)
18
German occupation, 1941-1944
9
1648-1654
8
approximately 1594-1657
7
1918-
6
1932-1933
6
20e siècle
6
Famine, 1932-1933
6
1639-1709
5
17th century
5
1936-1953
5
To 1648
5
1865-1944
4
1873-1945
4
1941-1944
4
1941-1944 (Occupation allemande)
4
1600-1699
3
1648-1775
3
1866-1934
3
1882-1931
3
1885-1974
3
1932-1933 (Famine)
3
1945-1991
3
19th century
3
Since 1918
3
Wars of 1918-1921
3
-1911
2
1340-1648
2
1340-1699
2
1600-1654
2
1767-1808
2
17e siècle
2
1800-1999
2
1814-1861
2
1842-1889
2
1856-1916
2
1859-1943
2
1860-1953
2
1861-1929
2
1866-1935
2
1873-1924
2
1874-1934
2
more ...