I am sort of confuse becouse this is phrased as one question (at first i thought you where talking about the recent fight about not putting in a pipeline but i relized you said why DID)
So i will split it into 2 Native americans fought for land becouse for one they needed a place to live and second they belived the great spirit wanted them to live where they did
They fought for water to live/drink
Among the bills vetoed by Tyler was a measure to re-establish a national bank. In response to these vetoes, most of Tyler's cabinet resigned, and Whig congressmen expelled Tyler from the party. A resolution calling for his impeachment was introduced in the House, though it was later defeated.
Answer:
A deep vein of xenophobia and nativism