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.
B. Morse created the telegraph in the United States in 1837.
I believe the answer is A. He developed the idea of the "invisible hand" of the free market, which continually keeps the economy on course. This can be found in his book "<span>The Wealth of Nations".
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Joan of arc introduced new battle strategies and incorporated older ones to succeed in 9 out of 13 of her battles in the 100 year war