Era
20th century
69
19th century
64
18th century
37
1900-1999
22
17th century
20
1800-1899
16
1700-1799
14
Colonial period, ca. 1600-1775
13
1837-1901
11
Revolution, 1775-1783
10
1945-
9
Early modern, 1500-1700
8
Revolution, 1789-1799
7
1783-1865
6
1910-1936
6
1968-1998
6
1998-
6
16th century
5
1800-1999
5
1936-1945
5
21st century
5
Victoria, 1837-1901
5
1564-1616
4
1789-1820
4
1835-1919
4
1933-1945
4
1951-
4
1953-
4
1997-2007
4
Anglo-Saxon period, 449-1066
4
Civil War, 1861-1865
4
Early modern and Elizabethan, 1500-1600
4
To 1500
4
1133-1189
3
1500-1700
3
1600-1775
3
1700-1899
3
1760-1789
3
1783-1850
3
1800-1901
3
1865-1918
3
1878-1944
3
2007-
3
Famine, 1845-1852
3
Ottoman Empire, 1288-1918
3
Pahlavi dynasty, 1925-1979
3
Since 1900
3
Stuarts, 1603-1714
3
To 1789
3
Wars of Independence, 1806-1830
3
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