Era
20th century
422
19th century
198
1900-1999
121
18th century
116
1783-1865
94
1865-1918
61
1800-1899
37
Colonial period, ca. 1600-1775
34
21st century
33
1803-1882
28
1783-1850
24
1945-
24
1918-1945
23
Revolution, 1775-1783
22
Revolutionary period, 1775-1783
22
17th century
21
1945-1989
18
1700-1799
15
1989-
14
Since 1900
14
1815-1861
13
1706-1790
11
1783-1899
11
1865-1999
11
1970-
11
1743-1826
10
1809-1865
10
1900 - 1999
10
2000-2099
10
1800-1999
9
1933-1945
9
1980-
9
1811-1896
8
1861-1865
8
1868-1963
8
1900-2099
8
1946-
8
1980-2020
8
To 1775
8
1700-1899
7
1775-1783
7
1865-1933
7
1960-1980
7
1600-1799
6
1608-1674
6
1804-1864
6
1886-1918
6
1929
6
1933-2004
6
Early modern, 1500-1700
6
more ...