Era
20th century
69
19th century
50
1837-1901
46
1910-1921
31
18th century
30
1922-1949
25
1949-
22
1760-1820
17
1922-
15
1901-1910
12
17th century
10
1172-1603
7
1775-1847
7
1846-1891
5
1882-1975
5
1968-1998
5
1667-1745
4
1809-1898
3
1846-1906
3
Civil War, 1922-1923
3
Revolution, 1775-1783
3
To 1172
3
1485-1603
2
1558-1603
2
1603-1714
2
1625-1649
2
1729-1797
2
1746-1820
2
1800-1837
2
1851-1927
2
1910-1936
2
1918-1933
2
1918-1945
2
Charles I, 1625-1649
2
Famine, 1845-1852
2
Partition, 1921
2
1154-1399
1
1371-1707
1
1603-1625
1
1621-1679
1
1660-1688
1
1660-1714
1
1691-
1
16th century
1
1700-1799
1
1733-1804
1
1760-1789
1
1763-1798
1
1769-1822
1
1775-1783
1
more ...