Era
20th century
277
19th century
85
21st century
43
18th century
14
1945-
12
17th century
10
1901-1989
9
1980-
8
Revolution, 1791-1804
8
16th century
6
1887-1940
5
1940-
5
1945-1989
4
1952-
4
1960-
4
1994-
4
Early modern, 1500-1700
4
1743-1803
3
1908-1960
3
1919-1947
3
1925-1995
3
1926-1984
3
1930-1961
3
1932-2014
3
1939-
3
1946-
3
1948-
3
1960-1980
3
1989-
3
1993-
3
2001-
3
Revolution, 1959
3
To 1500
3
Victoria, 1837-1901
3
1644-1912
2
1795-1881
2
1835-1910
2
1843-1916
2
1868-1963
2
1868?-1940
2
1874-1922
2
1874-1946
2
1875-
2
1883-1946
2
1891-1961
2
1897-1962
2
1910-1946
2
1924-1987
2
1926-2016
2
1928-1987
2
more ...