Era
20th century
209
1900-1999
97
1900-1938
44
Civil War, 1861-1865
37
19th century
36
1900 - 1999
33
1984
19
21st century
19
Colonial period, ca. 1600-1775
17
2000-2099
16
Revolution, 1775-1783
16
1800-1899
15
1775-1865
14
1861-1865
13
1878-1967
10
1933-2011
10
20e siècle
10
1600-1775
9
1978
9
1979
9
1980
9
1939-1945
8
1985
7
1865-
6
1944-
6
1982
6
20e siècle
6
1775-1783
5
1800 - 1899
5
1811-1874
5
1861 - 1865
5
1910-1970
5
1936-
5
1936-2024
5
1961-1975
5
1775 - 1865
4
1838-1905
4
1858-1932
4
1926-2001
4
1929
4
1951-1960
4
1983
4
1989
4
19e siècle
4
1600-1783
3
1819-1892
3
1843 or 1844-1868
3
1865-1877
3
1869-1968
3
1910-1946
3
more ...