Era
To 1500
22
20th century
20
18th century
9
17th century
8
19th century
8
1900-1999
7
21st century
4
Colonial period, ca. 1600-1775
4
1288-1918
3
1600-1699
3
16th century
3
1700-1799
3
1789-1900
3
1950-
3
Medieval, 500-1500
3
Ottoman Empire, 1288-1918
3
To 1397
3
To 500
3
1492-
2
1600-1799
2
1800-1899
2
1867-
2
1918-1945
2
1926-1984
2
476-1492
2
70-638
2
Early church, ca. 30-600
2
Han dynasty, 202 B.C.-220 A.D.
2
Qin dynasty, 221-207 B.C.
2
Republic, 265-30 B.C.
2
To 1900
2
1304-1377
1
1500 - 1599
1
1500-1599
1
1500-1799
1
1590-1672?
1
16th cent
1
1743-1794
1
1800-
1
1800-1999
1
1900 - 1999
1
1900-2099
1
1941-
1
1962-
1
2000-2099
1
2686-2181 B.C.
1
647-1517
1
Confederation, 1783-1789
1
Early modern, 1500-1700
1
Elizabeth, 1558-1603
1
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