Historical Period
20th century
437
19th century
137
1865-1950
74
1951-
65
21st century
50
1945-1989
48
1975-
31
Civil War, 1861-1865
31
1861-1865
30
1989-
30
1933-1945
22
1868-1963
21
1963-1969
20
1863-1877
18
1865-1877
17
1877-1964
15
1809-1865
14
18th century
14
2008
14
1961-1963
12
1981-1989
12
To 1964
12
1964-
11
1865-1900
10
1929-1968
10
1775-1865
9
1917-1963
9
1964-1975
8
1783-1865
7
1865-1933
7
1882-1945
7
1908-1973
7
1929
7
2001-2009
7
1862-1931
6
1865-
6
1953-1961
6
2009-2017
6
To 1950
6
1775-1783
5
1818-1895
5
1865-1951
5
1887-1940
5
1925-1965
5
1941-
5
1945-1953
5
1969-1974
5
1984
5
1856-1915
4
1865-1918
4
more ...