Complex sentence: The local people have been fishermen since the mid- 16th century, Hindu converts as well as migrants from various Portuguese overseas territories such as Angola, Mozambique, Brazil, etc. as well as Portugal itself.
Split into simpler sentences: The local people have been fishermen since the mid- 16th century. They include Hindu converts as well as migrants from various Portuguese overseas territories such as Angola, Mozambique, Brazil, etc. as well as Portugal itself.