Era
20th century
526
1900-1999
221
1961-1970
216
19th century
207
1951-1960
165
1991-2000
161
21st century
118
1800-1899
63
1971-1980
63
1981-1990
59
1941-1950
51
2000-2099
47
18th century
45
2001-2010
45
1898-1951
41
Revolution, 1775-1783
40
1951-
37
1775-1865
34
1931-1940
30
Colonial period, ca. 1600-1775
30
1800-1999
28
Civil War, 1861-1865
28
1749-1838
22
1900-2099
19
1775-1783
18
2001
18
1861-1865
17
1865-1898
15
Since 1951
14
To 1898
14
17th century
13
1900 - 1999
13
To 1775
13
1700-1799
12
1946-
11
1898-1999
10
1809-1865
9
1858-1919
9
Since 1900
9
1700-1899
8
1949-
8
2011-2020
8
20e siècle
8
1600-1775
7
1783-1865
7
1809-1849
7
1929
7
1941-
7
1947-
7
1971-
7
more ...