Complex sentence: Rickards is an influential figure in the study and application of creativity, particularly in Europe where he has worked extensively on the development of networks enabling European creativity practitioners to work together and explore alternatives to the dominant US models.
Split into simpler sentences: Rickards is an influential figure in the study and application of creativity, particularly in Europe. Thus he intensively worked on the development of networks enabling European creativity practitioners to work together and explore alternatives to the dominant US models.