Era
20th century
16
19th century
10
21st century
6
1949-
5
2000-
5
1900-1999
4
1912-1949
4
1924-1984
4
1928-1965
4
Civil War, 1861-1865
4
Qin dynasty, 221-207 B.C.
4
1908-1964
3
1931-1965
3
1937-1945
3
1949-1976
3
1951-
3
1960-
3
1976-2000
3
Cultural Revolution, 1966-1976
3
Han dynasty, 202 B.C.-220 A.D.
3
Ming dynasty, 1368-1644
3
1564-1616
2
1775-1817
2
1800-1899
2
1862-1937
2
1883-1945
2
1889-1945
2
1889-1977
2
1899-1996
2
1901-1966
2
1904-1976
2
1912-1928
2
1912-1994
2
1931-1945
2
1933-1945
2
1934-
2
1935-
2
1939-1945
2
1947-
2
1964-
2
1968-
2
1970-
2
259 B.C.-210 B.C.
2
Siglo XIX
2
Since 1976
2
-65
1
1368-1644
1
155-220
1
161-223
1
1640-1715
1
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