Era
20th century
10
19th century
4
1901-1909
2
1909-1913
2
1946-
2
1993-2001
2
21st century
2
1838-1927
1
1849-1861
1
1856-1924
1
1857-1930
1
1858-1919
1
1880-1973
1
1885-1899
1
1890-1969
1
1897-1995
1
18th century
1
1909-1981
1
1910
1
1912
1
1936-
1
1945-1989
1
1953-1961
1
1964-
1
1981-1989
1
1989-1993
1
1993-
1
Civil War, 1861-1865
1
To 1865
1