Era
1917-
15
20th century
12
1814-1861
8
1918-
4
Revolution, 1917-1921
4
1918-1945
3
1910-
2
1917-1921
2
1918-1938
2
20t
2
1
1
10th century
1
1564-1616
1
1644-1709
1
176
1
1799-1837
1
1800-1899
1
1811-1843
1
1832-1915
1
1866-
1
187
1
1870-1
1
1882-1952
1
1886-1
1
1892-1984
1
1893-
1
1893-1969
1
1894-1971
1
1899-
1
1906-2002
1
1911-
1
1911-1970
1
1912-
1
1914-
1
1917-1945
1
1920-
1
1921-1944
1
1936-1953
1
1953-1
1
19th century
1
20th
1
German occupation, 1941-1944
1
Revolution, 1775-1783
1
To 1648
1
Wars of
1
ca. 956-1015
1