C) The Constitution asserts that all men are created equal and have natural rights.
Back then , African American citizen were heavily discriminated by society.
For example, they did not allowed to enter the 'white folks' ' Restaurants. They don't even allowed to enter a same public restrooms as them.
They also doesn't count as citizen and not allowed to vote.
B)
Source: http://www.loc.gov/teachers/classroommaterials/presentationsandactivities/presentations/timeline/civilwar/recontwo/