A group of Northern Democrats who were against the American Civil War were called the Copperheads. They were the ones who wanted to prevent the independence of American slaves. The name came from copper liberty-head coins that they wore as badges.
I think A but I don’t know if I’m right
The nickname given to the 1st United States Volunteer Cavalry was the Rough Riders.
The opposite sum of a number refers to the fact that the opposite of a sum of real numbers is equal to the sum of the opposite. Base on that, the answer would be letter D. -(-17+5) = 17+(-5). I hope you are satisfied with my answer and feel free to ask for more
