What obstacles did african-american
soldiers face?

African Americans in the Civil War faced many problems. They were usually treated differently and had restricted roles. This doesn't mean that they didn't fight just as bravely as the other solders. Many of them died nobly for their cause.

Ain the free market economic system the government is hands off from all supply and demand rates

African americans at the time just came out of slavery and needed money to provide for there families. so they joined for the money mainly.