Historical Period
20th century
29
Civil War, 1861-1865
22
1820-1910
18
19th century
15
1821-1912
3
1841-1898
3
1886-1952
3
1955-
3
1818-1884
2
1832-1888
2
1873-1961
2
1875-1965
2
1879-1957
2
1881-1965
2
1887-1968
2
18th century
2
1943-
2
1958-
2
Civil War, 1936-1939
2
1564-1616
1
1805-1881
1
1820-1905
1
1835-1909
1
1840-1927
1
1883-1969
1
1885?-1953
1
1895-1963
1
1898-1951
1
1899-1961
1
1907-2005
1
1912-
1
1917-1976
1
1918-2007
1
1923-
1
1937-
1
1947-
1
1948-
1
1951-
1
1956-
1
1957-
1
1960-
1
1963-
1
1979-1992
1
Colonial period, ca. 1600-1775
1
Elizabeth II, 1952-
1
Revolucion, 1910-1920
1
Revolution, 1910-1920
1
Vietnam War, 1961-1975
1