Era
1945-
15
20th century
15
2001-2009
14
1900-1999
13
1981-2001
11
1989-
10
1993-2001
10
Since 1945
10
1945-1989
7
2009-2017
6
Civil War, 1861-1865
6
1861-1865
5
1980-
5
21st century
5
Since 1981
5
Since 1989
5
1971-1981
4
1981-
4
20e siècle
4
1783-1865
3
1977-1981
3
1981-2009
3
2001-2017
3
2009-
3
Since 1980
3
1969-
2
1971-2001
2
1989-1993
2
1991-
2
1993-
2
1993-2009
2
19th century
2
2000-2099
2
Colonial period, ca. 1600-1775
2
ESTADOS UNIDOS
2
Since 1993
2
To 1775
2
1775-1783 (Révolution)
1
1775-1850
1
1783-1850
1
1783-1918
1
1800-1899
1
1849-1877
1
1861-1865 (Guerre de Sécession)
1
1865-1918
1
1865-1921
1
1900-2099
1
1918-1945
1
1939-1945
1
1960-
1
more ...