Era
19th century
5
20th century
5
1800-1899
4
1809-1865
4
1900-1999
3
1639-1723
2
1663-1728
2
1757-1804
2
1777-1838
2
1794-1878
2
1875-1939
2
1878-1971
2
18th century
2
1932-
2
1951-
2
Since 1951
2
1600-1775
1
1700-1899
1
1701-1767
1
1812-1883
1
1813-1861
1
1813-1905
1
1836 - 1909
1
1836-1909
1
1839-1884
1
1846-1865
1
1846-1950
1
1861-1865
1
1863-1941
1
1865-1950
1
1869-1948
1
1891-1996
1
1899-2001
1
1906-1969
1
1909-1993
1
1911-1991
1
1918-1997
1
1923-2014
1
1942-1993
1
1946-
1
1980-2020
1
2000-2099
1
21st century
1
Civil War, 1861-1865
1
Colonial period, ca. 1600-1775
1
Constitutional period, 1789-1809
1
Geschichte 1854
1
Revolution, 1775-1783
1
Since 2020
1