Era
1970
28
1990
27
1950
18
1960
18
21st century
14
Civil War, 1861-1865
14
Devonian
14
Silurian
14
1861-1865
11
1864-1922
11
20th century
11
1900-1999
10
Dévonien
9
Ordovician
9
1980
8
From 405 to 425 million years ago
8
Silurien
8
1857-1930
7
1867-1912
7
1871-1948
7
20e siècle
7
From 425 to 500 million years ago
7
Mississippian
7
2000-2099
6
From 345 to 405 million years ago
6
Ordovicien
6
1831-1881
5
1861-1865 (Guerre de Sécession)
5
1940
5
19th century
5
1812-1815
4
1827-1900
4
2010
4
Carboniferous
4
From 310 to 345 million years ago
4
Pennsylvanian
4
Pleistocene
4
War of 1812
4
1812, Guerre de
3
1813
3
1848-1927
3
1859-1930
3
2000
3
21e siècle
3
From 10 thousand to 2 million years ago
3
History
3
Mississippien
3
Pléistocène
3
1787-1865
2
1815-1904
2
more ...