Complex sentence: Baley Party comprised of 200 settlers with wagons and a large heard of cattle, was the first emigrant train to venture onto Beale's Wagon Road, and upon entering Mohave territory the settlers started cutting down cottonwood trees lumber, an important resource for the Mohave.
Split into simpler sentences: Baley Party comprised of 200 settlers with wagons and a large heard of cattle, was the first emigrant train to venture onto Beale's Wagon Road. Upon entering Mohave territory the settlers started cutting down cottonwood trees lumber, an important resource for the Mohave.