Complex sentence: Such painful and dramatic acts allowed the worshipers to identify with the pain and death of Attis, to whom were dedicated a cycle of festivities, which were celebrated from 15th to 28th March.
Split into simpler sentences: Such painful and dramatic acts allowed the worshipers to identify with the passion and death of. For Attis were dedicated a cycle of festivities, which were celebrated from 15th to 28th March.