Era
20th century
148
19th century
126
18th century
29
Civil War, 1861-1865
12
1732-1799
11
1738-1820
11
17th-18th centuries
10
21st century
9
Colonial period, ca. 1600-1775
9
1844-1916
8
1959-
7
Revolution, 1775-1783
7
1743-1826
6
17th century
6
1741-1827
5
1872-1951
5
1943-
5
1946-
5
Civil war
5
1706-1790
4
1780-1849
4
1900-1999
4
1940-
4
1941-
4
To 1775
4
1644-1718
3
1773-1838
3
1778-1860
3
1783-1872
3
1796-1872
3
1799-1885
3
1800-1870
3
1834-1903
3
1844-1926
3
1860-1932
3
1891-1979
3
1893-1967
3
1912-
3
1928-
3
1935-
3
19th Century
3
19th cent
3
19th-20th century
3
19th-20th century,
3
Medieval, 500-1500
3
1
2
1606-1669
2
1615-1673
2
1656-1664
2
1674-1751
2
more ...