Era
19th century
8
20th century
5
1800-1899
4
1865-1918
3
1970-
3
Revolution, 1775-1783
3
1900-1999
2
1945-
2
2000-2099
2
21st century
2
Since 1970
2
To 1783
2
1588-1649
1
1743-1826
1
1775-1865
1
1783-1865
1
1849-1861
1
18th century
1
1918-1945
1
1989-
1
Civil War, 1861-1865
1
George III, 1760-1820
1
Since 1989
1