Era
20th century
861
19th century
355
21st century
231
18th century
83
17th century
68
16th century
48
1945-
46
1564-1616
22
1918-1945
21
Victoria, 1837-1901
20
1945-1989
19
Early modern, 1500-1700
19
Colonial period, ca. 1600-1775
18
1933-1945
15
Revolution, 1775-1783
15
Civil War, 1861-1865
13
To 1500
12
1789-1900
10
Revolution, 1791-1804
10
1878-1953
9
1918-1933
9
Revolution, 1789-1799
9
1837-1901
8
1897-1999
8
1912-1949
8
1925-1953
8
1989-
8
Civil War, 2011-
8
Qing dynasty, 1644-1912
8
1900-1999
7
1936-1953
7
British occupation, 1765-1947
7
Republic, 1912-1949
7
1812-1870
6
1947-
6
1949-
6
1953-1985
6
1960-
6
1980-
6
2001-
6
Cultural Revolution, 1966-1976
6
Partition, 1947
6
Revolution, 1917-1921
6
Revolution, 1954-1962
6
1644-1912
5
1800-1950
5
1887-1940
5
1901-1989
5
1917-1936
5
1936-1945
5
more ...