Complex sentence: The first settlement of Bahirwali was at an island in the center of the Jugburi river called "Diva", as circumstances changed and population grew, people started moving to the mainland opposite to the island.
Split into simpler sentences: The first settlement of Bahirwali was at an island in the center of the Jugburi river called "Diva". As circumstances changed and population grew, people started moving to the mainland opposite to the island.