Era
Civil War, 1861-1865
5
1780-1845
3
1939-1945
3
1732-1799
2
1775-1783
2
1805-1882
2
1896-1952
2
1918-1945
2
19th century
2
Revolution, 1775-1783
2
-2004
1
1748-1836
1
1786-1836
1
1793-1854
1
1801-1893
1
1805-1873
1
1812-1879
1
1826-
1
1831-1871
1
1843-1923
1
1856-1888
1
1861 - 1865
1
1907-1988
1
1907-2004
1
1910-2005
1
1925-
1
1933-
1
1939-1989
1
1945-
1
1945-1989
1
1972-
1
1997-
1
20th century
1
Since 1937
1
Since 1997
1
approximately 1801-
1