You need to know the difference between a nation and a state:
http://geography.about.com/cs/politicalgeog/a/statenation.htmThere were hundreds of Indian nations and possibly no Indian states,
in that, they might or might not have been recognized by the
newcomers. (Note the use of tribe in the definition is for tribes in
Iraq, not the misnamed Indian "tribes" - hence the Sioux nation)
The Wampanoags were a nation
So were the Sioux, Oneida, Aleuts, ad infinitum.
It is interesting your grasp on trespassing - if sovereignty is what your
definition depends on then the European settlers were trespassing on
Indian nations land.
The facts you will find are in my favor. Read 1491 by Mann on a
readable comprehensive work of the new world before and after
"discovery". Of course what is done is done but should not be forgotten
or misremembered to support a political agenda.