Era
20th century
410
1900-1999
207
19th century
188
21st century
162
1800-1899
70
2000-2099
70
18th century
52
1800-1999
34
1900-2099
33
To 1500
30
17th century
29
Civil War, 1861-1865
28
16th century
16
1700-1799
16
1939-1945
14
1564-1616
10
1600-1799
8
1951-
8
1964-
8
1989-
8
1700-1899
7
1861-1865
7
1945-
7
1948-
7
2001-2009
7
Early modern and Elizabethan, 1500-1600
7
1933-1945
6
1980-
6
1990-
6
Geschichte
6
Since 1989
6
1500-1599
5
1714-1837
5
1775-1865
5
1856-1939
5
1882-1941
5
1900 - 1999
5
1918-1945
5
1953-
5
1960-
5
1975-
5
1993-
5
Colonial period, ca. 1600-1775
5
Revolution, 1775-1783
5
1500-1699
4
1600-1699
4
1732-1799
4
1770-1831
4
1811-1896
4
1877-1964
4
more ...