Era
Colonial period, ca. 1600-1775
46
1775-1865
32
19th century
30
1600-1775
28
20th century
21
Civil War, 1861-1865
11
1849-1909
10
1800-1899
8
Revolution, 1775-1783
7
17th century
5
1817-1862
5
21st century
5
1600-1750
4
1722-1726
4
1735-1812
4
1799
4
1828-1914
4
18th century
4
1900-1999
4
Devonian
4
From 230 to 570 million years ago
4
Paleozoic
4
Queen Anne's War, 1702-1713
4
To 1775
4
1766
3
1775-1783
3
1783-1865
3
1800
3
1861-1865
3
Silurian
3
1695-1759
2
1726-1783
2
1792
2
1793
2
1797
2
1798
2
1800-1999
2
1858-1937
2
1865-1950
2
1897-1995
2
1938-
2
1940-
2
1945-1989
2
1951-
2
2000-2099
2
From 425 to 500 million years ago
2
Ordovician
2
-1683
1
-1701
1
-1725
1
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