Complex sentence: Though it is commonly thought that the origin of Christianity in North Konkan, was due to the proselytizing activities of the Portuguese in the 16th Century, it was St. Bartholomew, one of the twelve Apostles of Christ, who preached in North Konkan.
Split into simpler sentences: Though It is commonly thought that the origin of Christianity in North Konkan, was due to the proselytizing activities of the Portuguese in the 16th Century. It was, St. Bartholomew, one of the twelve Apostles of Christ, who preached in North Konkan.