Complex sentence: In the 9th century Ravello was an important town of the maritime republic of Amalfi, a producer of wool from its surrounding country that was dyed in the town and an important trading power in the Mediterranean between 839 and around 1200.
Split into simpler sentences: In the 9th century Ravello was an important town of the maritime Republic of Amalfi. It was a producer of wool from its surrounding country that was dyed in the town and an important trading power in the Mediterranean between 839 and around 1200.