Era
20th century
345
1900-1999
138
19th century
110
18th century
54
21st century
50
1960-1980
47
17th century
40
1800-1899
31
1945-1989
29
1980-
27
1945-
23
2000-2099
20
Early modern, 1500-1700
18
Since 1900
18
1989-
16
1961-1969
14
Revolution, 1789-1799
13
Puritan Revolution, 1642-1660
12
1789-1820
11
16th century
9
1933-1945
9
1800-1837
8
1865-1918
8
1946-
8
Civil War, 1861-1865
8
Revolution, 1775-1783
8
1608-1674
7
1800-1999
7
1700-1799
6
1700-1899
6
1837-1901
6
1865-1950
6
1900-2099
6
1909-1972
6
1944-
6
1958-
6
2017-2021
6
1600-1699
5
1609-
5
1660-1688
5
1737-1809
5
1760-1820
5
1772-1834
5
1800-1859
5
1801-1917
5
1879-1962
5
1882-1960
5
1900 - 1999
5
1901-1936
5
1910-1936
5
more ...