Era
20th century
169
1900-1999
82
21st century
35
19th century
30
Civil War, 1861-1865
17
2000-2099
14
1861-1865
11
1944-
10
1939-1945
9
1946-
9
1809-1865
8
1775-1783
7
1800-1899
7
1900-2099
7
1917-1963
7
1743-1826
6
1900 - 1999
6
Revolution, 1775-1783
6
1735-1826
5
1757-1804
5
1862-1937
5
18th century
5
1917-2000
5
1945-
5
1968-
5
1783-1809
4
1783-1865
4
1815-1861
4
1909-2001
4
1918-1945
4
1961-1975
4
2017-
4
20e siècle
4
Colonial period, ca. 1600-1775
4
1706-1790
3
1732-1799
3
1783-1815
3
17th century
3
1808-1875
3
1858-1919
3
1865-1950
3
1876-1948
3
1878-1967
3
1917-1994
3
1925-1965
3
1933-
3
1945-1989
3
1948-
3
1969-
3
1980-
3
more ...