Maybe we can add another guarantee, besides "death" and "taxes" ... "trade wars." 

In the early days of America, Native Nations were fighting over trade and power. And they saw the arrival of the Europeans as a tool to defeat their rivals. It's a period that led to shifting allegiances in a fight for dominance. 

And the clearest example of this early diplomacy is The Pequot War of the 1630s.  

To learn how this war depicts Native American alliances and shifting allegiances, Bob calls up Kathleen DuVal, author of Native Nations: A Millennium in North America.