Era
20th century
9
1887-1940
6
19th century
4
1921-2010
2
1957-
2
1743-1826
1
1807-1870
1
1861-1865
1
1861-1865 (Guerre de Sécession)
1
1861-1865, Civil War
1
1898-1976
1
1900-2000
1
1921-
1
1925-1965
1
1929-1968
1
1945-
1
1947-
1
1961-
1
1964-
1
1964-1975
1
21st century
1
Civil War, 1861-1865
1
Revolution, 1791-1804
1
To 1863
1
To 1964
1