Era
1700-1799
1
1728-1814
2
1800-1899
4
1811-1896
1
1831-1910
2
1843-1916
1
1849-1877
3
1862-1937
1
1867-1957
5
1871-1940
1
1873-1947
1
1874-1942
1
1874-1946
1
1876-1958
1
1881-1972
1
1890-
1
18th century
2
1900 - 1999
1
1900-1999
13
1902-1992
2
1902-1997
1
1906-1989
1
1908-1986
1
1912-1995
1
1915-1998
1
1917-1973
1
1929-2018
1
1930-1965
1
1933-2004
2
1948-1997
1
19th century
26
2000-2099
2
20th century
50
21st century
5
Civil War, 1861-1865
3
Revolution, 1775-1783
2