These were not merely "friendly Indians.”

How does this quotation from "Thanksgiving A Native American View” affect the author’s argument?

The author is arguing that the American Indians were able to help the Pilgrims, because they were sophisticated.
The author is arguing that the American Indians were nice, and that is why they helped the Pilgrims.
The author is arguing that the Pilgrims were not friendly, in contrast to the American Indians.
The author is arguing that neither the Pilgrims nor the American Indians were friendly.