Era
1914-
21
20th century
6
1918-1945
5
1865-1918
3
1849-1877
2
1970-
2
19th century
2
Civil War, 1861-1865
2
1854-1951
1
1859-1933
1
1870-1914
1
1873-1947
1
1882-1942
1
1884-1966
1
1887-1961
1
1889-
1
1893-1972
1
1899-1949
1
18th century
1
1900-1999
1
1901-1990
1
1907-1970
1
1917-
1
1918-1932
1
1921-
1
1960-1980
1
1970
1
Revolution, 1775-1783
1
To 1933
1
b. 1899
1