Era
20th century
143
19th century
71
1900-1999
52
21st century
41
18th century
35
1946-
27
1800-1899
19
2000-2099
16
1945-1989
14
1993-2001
11
1700-1799
10
1933-1945
10
1989-
10
Civil War, 1861-1865
10
1908-1957
9
Revolution, 1789-1799
9
2001-2009
8
1989-1993
7
2016
7
1993-
6
1913-1994
5
1945-
5
1700-1899
4
1900 - 1999
4
1901-1909
4
1913-1921
4
1945-1953
4
1953-1961
4
1981-1989
4
1988
4
2000
4
1767-1845
3
1789-1820
3
17th century
3
1800-1999
3
1809-1865
3
1858-1919
3
1861-1865
3
1867-1914
3
1882-1945
3
1909-1913
3
1924-2018
3
1943-
3
1951-
3
1969-1974
3
2001-
3
2017-
3
George III, 1760-1820
3
George IV, 1820-1830
3
1603-1649
2
more ...