Era
20th century
1,677
19th century
861
Civil War, 1861-1865
219
18th century
207
Early modern, 1500-1700
115
Revolution, 1775-1783
115
17th century
94
1564-1616
90
1933-1945
74
1900-1999
71
16th century
55
1989-
45
1945-
44
1945-1989
43
1775-1865
40
Colonial period, ca. 1600-1775
40
1809-1865
38
1941-
35
1800-1899
33
Revolution, 1789-1799
33
1943-
32
1951-
32
1775-1783
31
1820-1910
30
1889-1945
30
1946-
30
1947-
30
Middle Ages, 500-1500
30
1882-1941
29
1923-
29
1743-1826
28
1944-
28
1732-1799
27
1783-1865
27
1865-1950
27
1874-1965
27
1906-
27
1935-1977
27
1815-1861
26
1912-
26
Victoria, 1837-1901
26
1783-1809
25
1837-1901
25
To 1500
25
1921-
24
1934-
24
1924-
23
1932-
23
1926-
22
Elizabeth, 1558-1603
22
more ...