Marting Luther King DID NOT help the protestants and catholics split, the person you are thinking about it Martin Luther, he wrote the 95 Theses explaining what he disliked about the catholic church, which caused others to question some parts of the church and eventually establish the protestant churches.
Most had moved north and joined the Creek tribes
The Homestead Act was a government intervention would most likely cause problems for inhabitants of the region marked 'Indian Territory"