Complex sentence: Hence, it is not known when exactly Christianity was introduced in South Canara, although it is possible that Syrian Christians settled in South Canara just as they did in Malabar, a region south of Canara.
Split into simpler sentences: Hence, it is not known when exactly Christianity was introduced in South Canara. It is possible that Syrian Christians settled in South Canara just as they did in Malabar, a region south of Canara.