Kỷ nguyên
20th century
7
Civil War, 1861-1865
4
1865-
3
1946-
3
Revolution, 1775-1783
3
1732-1799
2
1775-1783
2
1783-1809
2
1818-1895
2
1822-1885
2
19th century
2
2001-
2
Colonial period, ca. 1600-1775
2
1743-1826
1
1809-1865
1
1820-1891
1
1849-1861
1
1857-1861
1
1861-1865
1
1863-1877
1
1924-
1
1945-
1
1989-
1
1989-1993
1
1993-2001
1
2000
1
To 1863
1
To 1865
1