Era
20th century
60
19th century
24
To 1500
22
21st century
19
18th century
12
1929
9
1783-1865
7
16th century
6
17th century
6
1901-1953
5
1961-1969
5
1989-
5
1969
4
1976-2000
4
Colonial period, ca. 1600-1775
4
Revolution, 1775-1783
4
1748-1832
3
1945-1989
3
British occupation, 1765-1947
3
Civil War, 1861-1865
3
To 146 B.C.
3
1711-1776
2
1724-1804
2
1770-1831
2
1775-1783
2
1888-1985
2
1906-1975
2
1918-1933
2
1933-1945
2
1938-2005
2
1945-
2
1946-
2
1947-
2
1949-
2
1960-
2
1964-
2
1976-
2
1995-2012
2
1997-
2
2000-
2
2001-2009
2
2009-
2
Early modern, 1500-1700
2
-1400
1
1066-1485
1
1292-1350
1
1327-1377
1
1371-1707
1
1445-1505
1
1486?-1546
1
more ...