I am pretty sure that European settlers brought smallpox and other diseases to the colonies, which, I believe, killed off enormous numbers of eastern Native Americans. Our history undercounts the depopulation. Much later in the west, the US Army gave infected blankets (smallpox?) out to the western tribes on purpose, like those chemical weapons banned by the Geneva Convention. But, of course I am no way suggesting that Native Americans deserve their Reservation land or any future considerations or reparations. That would require a less flat Federal tax and national empathy. Will not happen.