Era
1818
4
1819
4
1876
3
1860
2
1874-1946
2
1900-1999
2
1933-1945
2
1951-
2
19th century
2
20th century
2
1800-1899
1
1835
1
1836
1
1839
1
1840
1
1841
1
1842
1
1843
1
1844
1
1845
1
1846
1
1847
1
1848
1
1849
1
1850
1
1851
1
1852
1
1853
1
1854
1
1855
1
1856
1
1857
1
1858
1
1859
1
1861
1
1872
1
1873
1
1900 - 1999
1
1903-
1
1965-
1
Civil War, 1861-1865
1