Complex sentence: Kings of Kerala, India (Cheranadu) were called Ceran Kings and "divu", "tivu" or "dheep" means island, the island belonging to the Chera King was called "Cherandeep", hence "Sarandib" by Arab traders.
Split into simpler sentences: Kings of Kerala, India (Cheranadu), were called Ceran Kings and "divu", "tivu" or "dheep", which means island. The island belonging to the Chera King was called "Cherandeep", hence "Sarandib" by Arab traders.