Era
20th century
57
20e siècle
51
21st century
40
1900-1999
35
21e siècle
31
2000-2099
27
1945-1989
16
19th century
16
19e siècle
14
1989-
13
1800-1899
10
20e siècle
9
1900 - 1999
7
1946-
7
Civil War, 1861-1865
7
Since 1945
7
1861-1865 (Guerre de Sécession)
6
1945-
6
2017-2021
6
1861-1865
5
21e siècle
5
Since 1900
5
1800-1999
4
1809-1865
4
1900-2099
4
1939-1945
4
1980-
4
1980-2020
4
2017-
4
Since 1989
4
United States
4
1800 - 1899
3
1908-1973
3
1943-
3
1953-
3
1989-1993
3
1993-2001
3
2009-
3
Civil War, 2011-
3
Since 2000
3
-1882
2
1783-1865
2
1807-1870
2
1829-1912
2
1880-1959
2
1882-1945
2
1890-1969
2
18th century
2
1918-1945
2
1933-1945
2
more ...