Peoples who lived in America during colonization?

At the time of colonization, about 2,200 Indian peoples lived in America. At first, when the Europeans appeared, the indigenous population took them peacefully. They traded and exchanged various curiosities. True, over time, the local aborigines realized that the Europeans were here in order to seize these lands and get their wealth. This was the reason for the outbreak of the war. Thus, due to the war, the number of nationalities that lived here has decreased by almost three times.