File talk:Tribal Territories Southern New England.png

No such river
This is a fine map. However, it shows a river going from Boston all the way to Narragansett Bay, Rhode Island. There is no such river.

In Massachusetts, perhaps you intend to show the Charles and/or Neponset. But they have different configurations than the single river drawn.

Likewise, in Rhode Island, it appears you intend the river coming into Narrragansett Bay to be the Blackstone, which comes into the bay from the northwest, not the north. No river follows the eastern R.I. line, at least in the location shown. So redraw things.