What evidence does mann provide to support the idea that Indians in sixteenth-century new england lived in a dynamic world?

Charles C. Mann is among the most prominent America authors during the early parts of the 20th century wherein he was most famous for his work: Coming of Age in the Dawnland published in 1941. He presented his argument that the Native Americans lived in a dynamic world because they were already considered as civilised people, even before the Europeans came to the New World.