Era
20th century
24
1900-1999
14
21st century
5
1900-2099
4
1989-
4
1993-2001
4
2001-2009
4
1945-1989
3
19th century
3
1945-
2
1970-
2
1980-
2
1981-2001
2
2009-
2
Civil War, 1861-1865
2
Colonial period, ca. 1600-1775
2
Since 1970
2
Since 1979
2
Since 1980
2
1564-1616
1
1727-1760
1
1775-1850
1
1783-1850
1
1800-1899
1
1800-1901
1
1861-1865
1
1897-1962
1
1899-1961
1
1950-
1
1971-1990
1
1979-
1
1979-1997
1
1981-2009
1
1990-
1
1997-2007
1
2007-
1
Geschichte 1500-1900
1
Geschichte 1857-1901
1
Geschichte 1980-
1
Revolutionary period, 1775-1783
1
Since 1945
1
Since 1950
1
Since 1981
1
Since 1989
1
Since 1993
1
Victoria, 1837-1901
1