Era
20th century
28
1900-1999
15
19th century
6
21st century
6
1800-1999
3
1849-1919
3
2000-2099
3
1760
2
1865-1950
2
1872-1958
2
1889-1966
2
1913-1921
2
1951-
2
-1936
1
1740-1822
1
1775-1783
1
1800-1899
1
1826-1864
1
1835-1919
1
1873-1947
1
1880-1959
1
1888-1984
1
1902-1977
1
1905-1982
1
1908-1998
1
1908-2005
1
1910-1989
1
1948-
1
Revolution, 1775-1783
1
Since 1865
1