Definitely harmful, the Catholic Church is actually what really caused the problems because the interaction between the two made diseases spread, and fights begin when Native Americans didn't want to change
Both a and c are correct, however I think that A would be the most correct answer in this case.
It was the Mexican-American war <span>that brought about the need or desire to begin an expansionist policy with regard to foreign affairs, since the end of this war ceded a lot of new territory that was used by settlers moving west.</span>
Answer: The Emancipation Proclamation and Thirteenth Amendment brought about by the Civil War were important milestones in the long process of ending legal slavery in the United States. This essay describes the development of those documents through various drafts by Lincoln and others and shows both the evolution of Abraham Lincoln’s thinking and his efforts to operate within the constitutional boundaries of the presidency.
Explanation: Events early in the war quickly forced Northern authorities to address the issue of emancipation. In May 1861, just a month into the war, three slaves (Frank Baker, Shepard Mallory, and James Townsend) owned by Confederate Colonel Charles K. Mallory escaped from Hampton, Virginia, where they had been put to work on behalf of the Confederacy, and sought protection within Union-held Fortress Monroe before their owner sent them further south. When Col. Mallory demanded their return under the Fugitive Slave Law, Union General Benjamin F. Butler instead appropriated the fugitives and their valuable labor as "contraband of war." The Lincoln administration approved Butler's action, and soon other fugitive slaves (often referred to as contrabands) sought freedom behind Union lines
