Cyfnod
20th century
30
19th century
13
18th century
12
1900-1999
5
1951-
4
21st century
4
1800-1899
3
20e siècle
3
1783-1865
2
Civil War, 1861-1865
2
Revolutionary War, 1776-1789
2
Since 1951
2
1775-1865
1
17th century
1
1800-1999
1
1809-1887
1
1825-1891
1
1857-1861
1
1859-1860
1
1883-1913
1
1900-2099
1
1922-2000
1
1940-1950
1
1969-1974
1
1972
1
1993-2001
1
1993-2017
1
2001-2009
1
2009-2017
1
20th Century
1
21e siècle
1
Colonial period, ca. 1600-1775
1