Were black soldiers used by the confederacy to fight the union during the civil war?

Historians are concerned with the accuracy of their writings and readings but are also aware of the inability of authors to know every angle of every story biases, perspectives, beliefs, and a variety of other differences history being told by one person at a time no one being totally accurate, as hard as we try really need on this, and you^^

The united states economy makes up how much of the worlds economy

What area is it likely to have the most population