Which of the following is NOT a key feature of great changes that UK has experienced over the last sixty years?

A、Britain has changed from a world power with an empire stretching to all four corners of the earth to a regional European power seeking and maintaining links with its past through the Commonwealth.;
B、Since 1997, when Tony Blair' s 'New' Labour Party came to power there has been another period of cultural change, valuing the 'modern' and 'innovative' in business, design and the arts as well as supporting diversity in households and lifestyle. ;
C、As the British empire "on which the sun never set" collapsed, the material standard of living for the majority of the British population was declining.
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D、Racial discrimination, polluting the environment or drunken driving, have become less acceptable. The traditional sport of fox hunting has been banned.