I forgot about afghans (yum). Hmm. Apparently derivation of the name is unknown.

The word is Mohican, I think, and it means 'raw fish eater'.

Pretty sure that's a myth.

Re: borders. You're right, I'm sure, but I don't know that it's all that productive for me to go into the whys and wherefores (which as I understand it has a lot to do with the distribution of different indigenous peoples across the top of Nth America.)