The article you quoted had that information published with it. It wasn't quoted tho. Thought the whole article should be in. links http://www.bia.gov//FAQs/index.htm - -The link will tell you why the tribes are granted the status they are. While your there,you can wander and find the upgraded recognition of the Seneca/Cayugas. Their is a second "digital" link to the treaties on the page. second link has the treaties. Hopefully,this will educate others who have all these questions,that have been asked for the past decade.
War does not determine who is right-only who is left.