What caused the American Civil War to have such staggering loss of life in comparison to other conflicts the United States has fought in? PLEASE USE PQA (Put the Question in the Answer). 35 POINTS AND BRAINLIEST FOR WHOEVER ANSWERS CORRECTLY.

Who ever answers first gets ! trade in the vedic age led to a.the rise of kingdoms because of the importance of controlling land and long-distance travel routes b.the building of an extensive system of roads because of the difficult terrain c.the creation of a large banking class because of the need to exchange different currencies d.the development of a centralized government that controlled the economic decisions of its people