Complex sentence: A young Arapaho boy named Lame Beaver (Michael Ansara) grows up and becomes a great warrior after a single handed raid on a rival tribe brings horses to the Arapaho for the first time enabling them to become part of the great plains horse culture.
Split into simpler sentences: A young Arapaho boy named Lame Beaver (Michael Ansara) grows up during this period. He becomes a great warrior after a single-handed raid on a rival tribe brings horses to the Arapaho for the first time, enabling them to become part of the great plains horse culture.