3) how did the dred scott decision (document #5) support the pro-slavery arguments regarding the ability of the federal government to restrict the expansion of slavery? what position did this supreme court decision assign people of african descent in the united states of america? what inconsistencies does frederick douglass (document #6) identify with the founding principles of the nation and the current status of people of african descent within it? in what ways does the dred scott decision confirm and/or challenge douglass’ arguments