Historical Period
20th century
234
19th century
65
21st century
23
1914-1945
11
1918-1945
11
1850-1924
9
Civil War, 1861-1865
7
Revolution, 1905-1907
7
1955-1983
6
1865-1921
5
1865-1950
5
1900-1999
5
1913-1921
5
1867-1918
4
1871-1918
4
1882-1945
4
1884-1962
4
1933-1945
4
Revolution, 1918
4
To 1950
4
1800-1918
3
1818-1883
3
1839-1897
3
1865-1918
3
1870-1906
3
1879-1957
3
1879-1961
3
1887-1963
3
1888-1964
3
1888-1981
3
1918-1933
3
1945-
3
1952-
3
American occupation, 1915-1934
3
Revolution, 1918-1919
3
To 1917
3
To 1933
3
1815-1861
2
1837-1930
2
1848-1849
2
1849-1924
2
1850-1898
2
1856-1915
2
1856-1924
2
1865-
2
1869-1940
2
1871-1937
2
1880-1943
2
1905-1986
2
1909-1989
2
more ...