<em>What do you mean by D C and A? This is not a tripple question. May you say the right answer?</em>
The correct answer is C. Stand Watie saw the United States of America as the greatest enemy of Cherokee's Nation, due to many negative episodes such as the Indian Removal Act of 1830. Then, when the Civil War broke out, he saw the possibility of take advantage of the situation to weaken the common enemy that he shared with the Confederation.
Monroe Doctrine--This doctrine was announced in 1823 as a statement to Europe that they were no longer welcome in the Western Hemisphere as colonial holders.
Following the American Revolution and those of Mexico, Haiti, and South America, European countries had been almost completely pushed out of the Western Hemisphere. James Monroe announced his doctrine in 1823, stating the US would assist any country who had their independence threatened. This was to ensure the freedom of these new countries.
Paragraph 4 and 18. Trust me