These were not merely "friendly Indians." They had already experienced European slave traders raiding their villages for a hundred years or so, and they were wary - but it was their way to give freely to those who had nothing. Among many of our peoples, showing that you can give without holding back is the way to earn respect. Among the Dakota, my father's people, they say, when asked to give, "Are we not Dakota and alive?" It was believed that by giving there would be enough for all - the exact opposite of the system we live in now, which is based on selling, not giving.

—"Thanksgiving: A Native American View,"
Jacqueline Keeler

Which details does Keeler use to support the claim “It was their way to give freely to those who had nothing?” Check all that apply.
American Indians had experienced slave traders.
American Indians were wary of new people.
Giving was believed to be a way to earn respect.
Giving results in everyone having enough.
Today people buy everything and do not give.