Kahnawake
They controlled territory on both sides of the Mohawk River and west of the Hudson River in present-day New York , where they protected other parts of the confederacy to the west against invasion by tribes from present-day New England and the coastal areas . 
<triplet> Mohawk River <subj> Hudson River <obj> mouth of the watercourse <triplet> Hudson River <subj> Mohawk River <obj> tributary