The Iroquois Confederacy, was 5 nations, not tribes they were nations which shows they were the United Nation of America before the white people showed up
I like the story of White Buffalo Women which is a Lakota story of a spiritual woman that comes to teach the people how to be peaceful, and two young brave look at her with lust and they turn into dust.
Back in 2011ish I read a book by Albert Brooks (comedian/actor/author) called 2030 and it was all about the future of America and so much in that fiction story is happening today. It's worth a read.