I was born in America, and grew up in America. So did my parents, and both their parents. I'm native American.

When people speak of indigenous Americans... I don't care. As mentioned, civilizations have come and gone. No known tribe of indigenous Americans is likely the true original inheritor of any given land in America. The British aren't the original inhabiting bloodline of Britain. Neither are the Canadians, Australians, Japanese, Chinese, Mexicans, or probably most anyone.

And for anyone that is, somehow? I still don't care. Each man and woman must make the best of what he or she has. Are you disadvantaged because of what people in the past did? Not likely, but if you are, then welcome to the human being club. Everyone has a weakness, infirmity, stigma, or some other disadvantage in life. Your people had mathematicians and doctors and religions and invented things? So did everyone else's. Now it's your turn; invent something, heal someone, grow in spirituality, apply logical reasoning to your judgment.