The Treaty of Paris marked the end of the Spanish American War. The correct option among all the options that are given in the question is option "a" or the first option. The Treaty of Paris was signed on 3rd of September in the year 1783. I hope that this is the answer you were looking for and it has helped you.
D) He helped Martin Luther King Jr.,in his rise to national importance?
I believe c is the answer because the word it's is saying it is
Answer: Lincoln failed to describe a clear vision for the future of the country.
I think it's the second one