Complex sentence: At the Dissolution of the Monasteries the abbey's possessions were in effect seized by the crown and assigned to the diocese of Norwich, though the monastery was supposed to continue, within a few years at least the monks had dispersed.
Split into simpler sentences: At the Dissolution of the Monasteries the abbey's possessions were in effect seized by the crown and assigned to the diocese of Norwich. Though the monastery was supposed to continue as a community, within a few years at least the monks had dispersed.