Era
20th century
75
19th century
21
1945-
20
17th century
13
18th century
13
Revolution, 1917-1921
11
1933-1945
10
21st century
9
Revolution, 1789-1799
9
1870-1924
8
To 1500
8
1945-1989
7
16th century
6
1960-
6
Qing dynasty, 1644-1912
6
To 146 B.C.
6
1837-1901
5
1889-1945
5
1949-1976
5
Civil War, 1936-1939
5
Nicholas II, 1894-1917
5
Republic, 1912-1949
5
Tudors, 1485-1603
5
1789-1815
4
1871-1918
4
1874-1965
4
1918-1933
4
1945-1955
4
1949-
4
1976-2002
4
1990-
4
1991-
4
711-1516
4
Anglo-Saxon period, 449-1066
4
Empire, 30 B.C.-476 A.D.
4
German occupation, 1941-1944
4
To 332 B.C.
4
1421-1737
3
1600-1649
3
1644-1912
3
1912-1945
3
1917-1945
3
1917-1948
3
1922-1945
3
1973-1993
3
1985-
3
20e siècle
3
356 B.C.-323 B.C.
3
476-1492
3
Civil War, 1642-1649
3
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