Era
20th century
1918-1945
20
1940-1991
17
Soviet occupation, 1940-1941
15
1945-1991
14
19th century
13
German occupation, 1941-1944
11
1918-1940
10
1991-
9
Revolution, 1905-1907
5
War of Independence, 1918-1920
5
21st century
4
1795-1918
3
1877-1942
2
1921-1951
2
1989-
2
Revolution, 1917-1918
2
1851-1926
1
1861-1942
1
1880-1951
1
1881-1965
1
1882-1962
1
1883-1940
1
1884-1957
1
1886-1952
1
1895-
1
1895-1954
1
1896-1991
1
1913-1948
1
1914-1918
1
1917-1998
1
1918-1939
1
1919-1947
1
1922-
1
1925-
1
1925-1953
1
1926-
1
1929-
1
1931-
1
1932-2010
1
1933-1935
1
1937-
1
1944-1947
1
1945-1989
1
1965-
1
2001
1
2002
1
2005
1
2009
1
20h century
1
more ...