Era
1893-1972
6
21st century
6
20th century
5
1937-1945
4
Qin dynasty, 221-207 B.C
4
1866-1925
3
1910-1935
3
1914-1970
3
1940-1973
3
1997-
3
20th century conditions
3
Revolution, 1911-1912
3
Since 1997
3
-229
2
1900-1999
2
1901-1988
2
1919-1997
2
1924-2018
2
2000-2099
2
221-207 B.C
2
Dinastía Ch'ing, 221-207 a.C. v Teatro
2
Three kingdoms, 220-265
2
Transfer of Sovereignty from Great Britain, 1997
2
1189-1945
1
1368-1644
1
1847-1924
1
1874-1916
1
1888-1953
1
1907-1992
1
1908-1964
1
1909-1992
1
1910-1991
1
1911 - 1912
1
1911-1928
1
1912-1928
1
1917-2012
1
1923-
1
1929-2014
1
1945 - 1949
1
1945-1949
1
1947
1
1950-
1
1956-
1
1961-1985
1
1970-
1
1975-
1
1990-
1
1996-
1
1997
1
220-265
1
more ...