I remember as a child having an illustrated history of Canada whose early pages were filled with images of Native Canadian life. One of the images that still stands out in my mind was a picture of a group of Asiatic looking people struggling against the elements as they made their way along a land bridge across the Bering Straight separating Asia from North America. It was the accepted theory in those days that the first people had only been fairly recent immigrants when the Europeans showed up, having only come here within the thousand years prior to first contact.
It has only been in the last 20 years or so that the Asian migration theory has been seriously challenged, and is now starting to fall out of favour. Of course if anybody had bothered to listen to the stories told by the people living here when the Europeans arrived they might never have come up with it in the first place. There isn't one story among any of the nations corresponding with people crossing from Asia over into North America. Nearly all the creation stories have them starting life here, not somewhere else on earth and travelling here.
Of course listening to the first peoples was the last thing on the minds of the governments of North America; in fact they did their best to ensure those stories weren't heard by anyone. Generations of children were stolen from their parents in one of the worst examples of cultural genocide ever attempted. Cut off from family, friends, and community, they were forbidden to speak the language of their parents and were prevented from learning anything about their own people.
It's a blessing that governments are as inefficient as they are as enough people escaped their nets to prevent the complete obliteration of all the stories. Today there are men and women across North America who have taken on the huge responsibility of keeping those stories alive for future generations either by writing them down, telling them like their ancestors did in circles around a fire, bringing them to life in theatre, or using them as the basis for creating new stories.