Era
20th century
134
1892-1973
67
19th century
58
1898-1963
35
1900-1999
35
1809-1849
21
1856-1919
17
1832-1898
15
1800-1899
13
21st century
10
1824-1905
9
1929-2018
9
1946-
8
1886-1945
7
1890-1937
7
1858-1924
6
18th century
6
1916-2014
6
1906-1936
5
Colonial period, ca. 1600-1775
5
16th century
4
1900 - 1999
4
1911-1968
4
2000-2020
4
1564-1616
3
1700-1799
3
1794
3
1934-
3
1938-
3
1970-2000
3
Middle English, 1100-1500
3
Revolution, 1775-1783
3
1760-
2
1800-1999
2
1812-1870
2
1850-1894
2
1856-1925
2
1856-1939
2
1860-1937
2
1878-1957
2
1901-1981
2
1920-1950
2
1920-2012
2
1922-1969
2
1929-2019
2
1939-
2
1939-1945
2
1948-
2
1955-
2
1964-
2
more ...