Era
1850
868
1900
813
1880
299
1830
198
1810
73
1870
57
1860
48
1840
33
1820
21
1990
16
1800
13
19th century
4
30 B.C.-640 A.D
4
18th century
3
1800-1899
2
19e siècle
2
1486-1583
1
15th century
1
1600-1799
1
16th century
1
1790
1
17th century
1
1800 - 1899
1
1855
1
1890
1
19e siècle
1
Civil War, 1861-1865
1
Pennsylvania
1
To 1775
1