Leaders--they with commissioners for NE created a treaty and therefore the sagamores are spokespersons or leaders of the tribes.
Sagamores of the tribes were meeting with NE leadership to create a treaty. Only leadership would be recognized for the treaty process. The sagamores were either leaders of the tribes or acting as diplomats to complete the treaty process.
Generally speaking, Wordsworth's early poems do not yet reflect his ultimate "<span>disillusionment with the outcome of the French Revolution", since this hadn't taken place yet.</span>
