Complex sentence: Brooks is one of the few Alaskan Natives competing in the modern Iditarod, which is a considerable change from the early days of the Iditarod.
Split into simpler sentences: Brooks is one of the few Alaskan Natives competing in the modern Iditarod. Few indigenous Alaskans compete in the modern Iditarod, which is a considerable change from the early days of the Iditarod.