Complex sentence: Siliguri is located on the banks of the Mahananda River and the foothills of the Himalayas, it is a principal commercial, tourism, transportation, and educational center of North Bengal.
Split into simpler sentences: Siliguri is located on the banks of the Mahananda River and the foothills of the Himalayas. It is a principal commercial, tourism, transportation, and educational center of North Bengal.