In Australia at least, technology was pretty stagnant for 40,000 years, so it's unlikely that an extra 200 years of isolation would have produced much innovatio

In Australia at least, technology was pretty stagnant for 40,000 years, so it's unlikely that an extra 200 years of isolation would have produced much innovation. The American context is quite different, as several quite advanced civilizations flourished there at various times. Of course anyone going onto my hypothetical reservation would take with them a lot of knowledge unavailable to the true stone age folks, but not much can be done about that. As for clothing, a loincloth would be on the modest side: http://www.gondwananet.com/aboriginal-clothing.html http://www.gondwananet.com/aboriginal-clothing.html