Era
20th century
15
18th century
5
17th century
4
19th century
4
21st century
3
1882-1941
2
1892-1983
2
Colonial period, ca. 1600-1775
2
1517-1648
1
1648-1715
1
1660-1714
1
1705-1793
1
1714-1837
1
1723-1780
1
1809-1865
1
1899-1980
1
1908-2001
1
1911-1963
1
1912-1988
1
1913-1983
1
1917-1945
1
1917-2014
1
1918-1945
1
1929
1
1929-1968
1
1933-1945
1
1936-1945
1
2001-2009
1
Revolution, 1775-1783
1
To 1900
1
World War, 1939-1945
1