Era
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Confederation, 1867
3
Revolution, 1789-1799
3
Since 1900
3
Since 1951
3
Tiananmen Square Incident, 1989
3
To 1975
3
To 221 B.C.
3
1066-1485
2
1328-1589
2
1491-1547
2
1533-1603
2
1578-1650
2
1581-1656
2
1584-1650
2
1590-1653
2
1594-1672
2
1596-1680
2
1598 or 9-1645
2
15th century
2
1600-1783
2
1602-1668
2
1602-1690
2
1606-1695
2
1607-1651
2
1621-1678
2
1643-1715
2
1648-1714
2
1660-1685
2
1664-1696
2
1676-1760
2
1700-1899
2
1715-1775
2
1716-1778
2
1716-1785
2
1718-1775
2
1760-1789
2
1763-1867
2
1765-1947
2
1767-1845
2
1769-1846
2
1775-1789
2
1798-1834
2
1798-1942
2
1801-1809
2
1802-1866
2
1802-1878
2
1804-1844
2
1808-1875
2
1812-1885
2
1822-1885
2
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