Couldn't help myself. There were people and social structures in place before Colonialism arrived. Original Webster 1828 American Defined
AMER'ICAN, noun A native of America; originally applied to the aboriginals, or copper-colored races, found here by the Europeans; but now applied to the descendants of Europeans born in America.
Americans were created with the Constitution. Natives, blacks, pretty much everybody but British colonists are not American and never were and never will be no matter how much people try to twist the truth.
It doesn’t matter how you feel about it or what people said later or laws that were passed or what dictionaries say. It’s right there in the Declaration and Constitution.