Complex sentence: For the local Hmong and Yeo tribes that lived in the area, Phou Pha Thi was a place of religious significance; they believed it was inhabited by spirits who possessed supernatural powers to exercise control over the circumstances of their lives.
Split into simpler sentences: For the local Hmong and Yeo tribes that lived in the area, Phou Pha Thi was a place of religious significance. They believed it was inhabited by spirits possessing supernatural powers to exercise control over their lives.