Era
20th century
88
19th century
58
21st century
20
18th century
15
1818-1883
12
17th century
11
Civil War, 1936-1939
8
16th century
7
1770-1831
7
1882-1941
6
1809-1849
5
1933-1945
5
1989-
5
Civil War, 1861-1865
5
Classical period, 1500-1700
5
To 1500
5
1600-1681
4
1646-1716
4
1711-1776
4
1906-1989
4
1918-1933
4
1918-1945
4
1945-1989
4
1959-1990
4
1969-
4
1225?-1274
3
1596-1650
3
1642-1727
3
1769-1821
3
1809-1882
3
1810-
3
1871-1918
3
1872-1970
3
1879-1955
3
1889-1945
3
1947-
3
1970-
3
1974-
3
30 B.C.-476 A.D.
3
House of Austria, 1516-1700
3
Middle Ages, 600-1500
3
Revolution, 1910-1920
3
Richard I, 1189-1199
3
Spanish colony, 1540-1810
3
To 1810
3
Wars of Independence, 1810-1821
3
-632
2
1469-1527
2
1548-1820
2
1564-1642
2
more ...