Era
20th century
4
Civil War, 1861-1865
4
18th century
2
19th century
2
To 146 B.C.
2
1732-1799
1
1775-1865
1
1809-1865
1
1848-1860
1
1871-1900
1
1893-1979
1
1898-
1
1902-1974
1
1910-1999
1
1917-1963
1
1919-2012
1
1928-
1
1929
1
1929-1968
1
1937-
1
1942-1992
1
1954-
1
1960-
1
332 B.C.-638 A.D.
1
Colonial period, ca. 1600-1775
1
Revolution, 1775-1783
1
To 1775
1
To 332 B.C.
1