Era
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1954-
1
1966-1976
1
1976-
1
1976-2000
1
1979-1997
1
1984-1997
1
1993-
1
1997-2099
1
2017
1
2022
1
20th century conditions
1
Cultural Revolution, 1966-1976
1
Geschichte 1899
1
Geschichte 1935-1985
1
Geschichte 1980-2004
1
Geschichte 1982-2005
1
Since 1900
1
Since 1949
1
Since 1976
1
To 221 B.C.
1