Once again, everything we know is wrong. For as long as I've been alive, it has been understood that the Clovis* people were the first to inhabit North America.
Now, thanks to advances in marine archaeology, it appears that there was another culture, 1000 years older and located in the southeast, rather than southwest, that may have brought what is called "Native American" culture to our continent.
Prehistoric Site in Florida Confirms Pre-Clovis Peopling of the Americas
Recall, this is at a time when the mastodon and the camel freely roamed what is now Florida. What's interesting to me is that, whatever this collection of hunter/gatherers will come to be called, they were already hunting with dogs.
*The Clovis culture is a prehistoric Native
American culture that first appears in the archaeological record of
North America around 13,500 years ago, at the end of the last ice age.
The culture is named for artifacts found near Clovis, New Mexico, where the first evidence of this tool complex was excavated in 1932.