Era
20th century
157
1940-1991
48
1991-
31
1918-1940
26
19th century
23
21st century
18
Soviet occupation, 1940-1941
17
War of Independence, 1918-1920
11
German occupation, 1941-1944
7
1934-
6
Revolution, 1905-1907
5
1839-1907
4
1878-1940
4
1883-1980
4
18th century
4
1922-
4
To 1500
4
approximately 1600-1657
4
17th century
3
1861-1917
3
1865-1933
3
1886-1971
3
1890-1942
3
1900-
3
1916-
3
1941-
3
1943-
3
1948-
3
1953-
3
1956-
3
16th century
2
1803-1882
2
1868-
2
1868-1946
2
1870-1940
2
1874-1956
2
1874-1970
2
1877-1964
2
1880-1973
2
1887-1953
2
1889-1976
2
1889-1977
2
1890-1951
2
1891-
2
1896-1968
2
1900-1937
2
1919-2007
2
1927-1992
2
1938-
2
1939-1940
2
more ...