Era
20th century
419
19th century
362
To 1898
163
Revolution, 1775-1783
118
1898-1951
112
1900-1999
99
Colonial period, ca. 1600-1775
86
1951-
69
1775-1783
66
1775-1865
44
1865-1898
36
18th century
36
21st century
33
Civil War, 1861-1865
26
To 1775
26
1800-1899
24
1600-1775
18
Since 1951
17
1898-1999
15
2000-2099
14
17th century
10
Conspiracy of 1741
10
1861-1865
9
1721-1786
8
1783-1865
8
1882-1947
8
1900 - 1999
8
1730-1784
7
1737-1808
7
1834-1904
7
1924-2013
7
1926-1966
7
2001
7
1732-1786
6
1800-1999
6
1865-1918
6
1900-2099
6
1929
6
1986
6
Since 1900
6
1700-1799
5
1775-1899
5
1823-1878
5
1947-
5
1592-1672
4
1600-1783
4
1700-1899
4
1732-1799
4
1791
4
1796
4
more ...