Complex sentence: This did not prevent the Saracens from frequently attacking it and, in 953, from sacking it: in that occasion much of the population was deported, by order of the Sicilian muslim emir Hassan al-Kalbi, as slaves to Africa.
Split into simpler sentences: This did not prevent the Saracens from attacking the town repeatedly and, in 953, from sacking it. Much of the population was deported, by order of the Sicilian muslim emir Hassan al-Kalbi, as slaves to Africa.