Yeah, but the Europeans showing up is part of history in the Americas. Thus, the horse influenced human history throughout most of the world. And the cultures o

Yeah, but the Europeans showing up is part of history in the Americas. Thus, the horse influenced human history throughout most of the world. And the cultures of the pacific islands aren't really capable of proving or disproving any broad generalizations about human history. The pacific islands are separated from the mainland by thousands of miles and constitute a tiny land mass.