Complex sentence: Her daughter, Beatrix retained the celebration on 30 April after she took the throne in 1980, but altered her mother's custom of receiving a floral parade near a royal palace; instead she chose to visit different Dutch towns each year and join in the festivities.
Split into simpler sentences: Her daughter, Beatrix retained the celebration on 30 April after she took the throne in 1980. Beatrix altered her mother's custom of receiving a floral parade near a royal palace, instead choosing to visit different Dutch towns each year and join in the festivities.