Era
1800-1899
1
1805-1889
1
1816-1875
1
1853-1911
1
1853-1933
1
1861-1865
1
1861-1867
1
1876
1
1894-1973
6
1896-1977
2
1900 - 1999
1
1900-1999
1
1900-2099
2
1905-1979
1
1907-1979
1
1911-1998
1
1915-2002
1
1916-2001
1
1924-2014
1
1925-1984
1
1926-
1
1930-
2
1937-2016
1
19th century
2
2000 - 2099
1
20th century
9
21st century
4
Civil War, 1861-1865
2
European intervention, 1861-1867
1
Revolution, 1910-1920
2