Era
20th century
32
1900-1999
13
19th century
13
21st century
7
1800-1899
6
1516-1700
4
1800-1999
4
1945-
4
711-1516
4
Classical period, 1500-1700
4
17th century
3
18th century
3
1910-1946
3
1982-
3
2000-2099
3
Civil War, 1936-1939
3
Since 1900
3
To 1830
3
1500-1700
2
1810-
2
1900-2099
2
1948-
2
1959-
2
1960-
2
Revolution, 1789-1799
2
Roman period, 218 B.C.-414 A.D.
2
Since 1789
2
Since 1945
2
-1575
1
1444?-1522
1
1479-1516
1
1484-1566
1
1485-1547
1
1492-
1
1496-1584
1
1517-1789
1
1644-1912
1
16th century
1
1700-1899
1
1776-1827
1
1838-1892
1
1868-
1
1886-1903
1
1899-1906
1
1899-1962
1
1900-1987
1
1902-1982
1
1910-1920
1
1914-1998
1
1918-
1
more ...