In the brown versus board of education The plaintiffs problem Was they did not get their way
I know this is a late answer, but hopefully it can help someone else out!
The answer to your question would be, "Each measure was voted on individually". This allowed congressmen to oppose the measures they disagreed with, but still keep the measures they agreed upon.
Revivalists sent missionaries to convert Americans living in remote regions.
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.
Some are more desirable because every person has a personal preference that appeals to them and if it isn't appealing to them or if society likes one more, it would naturally draw the to it.