What martial art styles were originated in the United States?

[Dim Wit Moc]

I just don't want everyone else to feel bad, but you're right. All MA's were developed right here in the good old US of A. Of course it wasn't called America then.
Back then we were just a bunch of roaming nomads with nothing better to do, then one day the Big Guy thought hey I could beat up on the little guys more often if I called it an art and trained them in it.
From there word about this art spread across the world and other peoples started developing their own arts.
Some time near the end of the ice age, the American arts were neglected and ultimately forgotten. Along with most of America, which is actually the birth place of humanity.
But other arts were still around, and started claiming to be the first. That wouldn't have happen if Big Guy would have survived, but in his last American title defense he had his neck snapped by a NJJ (Neanderthal Jiu Jitsu) practitioner.

Finally, a historical analysis based on well documented facts, and gourmet food for thought.