Two actions that were taken by the federal government : Firstly, They didn't honor many treaties that they had. Another is that In 1831 the Chief Justice of the Supreme Court, John Marshall, had attempted to define their status. I hope this helps.
Have a wonderful rest of the day :).
Native American issue I’m guessing
Answer:
industrialization pushed European empires to find more resources and markets in Africa and Asia to support there Industries back at home.