Era
20th century
217
19th century
92
1900-1999
89
21st century
58
1800-1899
30
2000-2099
27
1975-
25
1887-1940
22
18th century
20
1800-1999
14
Civil War, 1861-1865
10
Since 1975
10
1900-2099
9
1868-1963
8
Revolution, 1791-1804
8
1906-2001
7
To 1863
7
17th century
6
Colonial period, ca. 1600-1775
6
1700-1899
5
1865-1950
5
1877-1964
5
1775-1865
4
1791-1899
4
1939-1945
4
1945-1989
4
1951-
4
1980-2020
4
16th century
3
1743-1803
3
1865-1945
3
1897-1962
3
1925-1961
3
1946-
3
1947-
3
1956-
3
1957-
3
1961-1978
3
1964-1975
3
1980-
3
1989-
3
1993-
3
2008
3
Geschichte
3
-1836
2
1500-1699
2
1700-1799
2
1735-1826
2
1743-1826
2
1799-1837
2
more ...