Era
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To 500
5
Wars of Independence, 1806-1830
5
William and Mary, 1689-1702
5
1225?-1274
4
1500-1599
4
1608-1674
4
1711-1776
4
1810-
4
1883-1954
4
1889-1957
4
1890-1980
4
1898-1936
4
1915-1999
4
1930-1945
4
1933-
4
1933-1945
4
1945-1989
4
1947-
4
1963-1969
4
1966-
4
1967-
4
1982-
4
Early modern, 1500-1700
4
Pennsylvanian
4
Revolution, 1775-1783
4
Since 1980
4
To 146 B.C.
4
approximately 480 B.C.-411 B.C.
4
-1400
3
1288-1918
3
1470-1565
3
1485-1547
3
1700-1899
3
1717-1779
3
1771-1810
3
1775-1865
3
1783-1830
3
1803-1862
3
1818-1883
3
1821-1861
3
1821-1875
3
1830-1895
3
1861-1865
3
1861-1909
3
1878-1923
3
1885-1930
3
1888-1963
3
1890-1979
3
1896-1970
3
1899-1977
3
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