Era
20th century
310
19th century
170
2001-2009
90
21st century
73
1946-
72
1945-1989
64
1989-
62
20e siècle
58
18th century
52
Civil War, 1861-1865
46
1783-1865
43
1900-1999
43
1809-1865
31
1993-2001
28
1775-1783
27
1981-1989
26
1861-1865
24
1815-1861
22
1743-1826
21
2001-
20
1933-1945
18
1975-
18
2008
16
1775-1865
15
1953-1961
15
2009-
15
2009-2017
14
1783-1809
13
1989-1993
13
21e siècle
13
Revolution, 1775-1783
13
1945-
11
1951-
11
1980-2020
11
2000-2099
11
1977-1981
10
1993-
10
1882-1945
9
1890-1969, USMA 1915
8
1924-
8
To 1775
8
To 1865
8
1789-1809
7
1845-1861
7
1865-1950
7
1908-1973
7
1945-1953
7
19e siècle
7
2017-2021
7
17th century
6
more ...