Historical Period
20th century
656
19th century
291
21st century
86
1975-
66
18th century
61
Civil War, 1861-1865
43
1951-
33
1980-2020
33
1877-1964
32
Colonial period, ca. 1600-1775
30
1865-1950
27
1929-1968
25
1775-1865
24
1945-1989
22
1961-1978
22
1933-1945
21
1945-
21
1978-1989
18
To 1964
18
17th century
16
1989-
16
To 1863
15
1868-1963
13
1863-1877
11
1865-1877
11
1865-1918
11
1964-
11
1964-1975
11
1818-1895
10
1918-2013
10
1994-
10
1993-
9
2001-2009
9
2009-2017
9
1941-1955
8
1961-1994
8
2008
8
16th century
7
1809-1865
7
1861-1865
7
1856-1915
6
1862-1931
6
1865-
6
1865-1900
6
1865-1951
6
1925-1965
6
1948-1961
6
1961-1991
6
1993-2001
6
Revolution, 1775-1783
6
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