Complex sentence: Haddadin was attracted to the mountainous site of Ramallah because it was similar to the other mountainous areas he came from, as well as being a heavily forested area which could supply him with plenty of fuel for his forges.
Split into simpler sentences: Haddadin was attracted to the mountainous site of Ramallah because it was similar to the other mountainous areas he came from. In addition, the heavily forested area could supply him with plenty of fuel for his forges.