Final answer:
The Dred Scott v. Sandford case had negative outcomes by reinforcing slavery and denying citizenship to Black individuals, with the indirect positive effect of mobilizing abolitionists and ultimately contributing to political shifts against slavery.
Step-by-step explanation:
The Dred Scott v. Sandford case is primarily viewed in a negative light due to its reinforcement of slavery and its declaration that Black people, whether free or enslaved, could not be citizens of the United States. However, it's hard to point out any direct positive outcomes of the case itself, as it intensified national divisions over slavery and contributed to the onset of the Civil War. The case had a galvanizing effect on anti-slavery advocates, including Abraham Lincoln, ultimately contributing to the rise of the Republican Party and fiercer national dialogue on slavery.
The negative outcome of the Dred Scott decision was the reinforcement of slavery and the denial of citizenship and legal standing for Black people. A positive, albeit indirect, outcome could be the mobilization it caused among abolitionists and those opposed to the spread of slavery, which played a part in societal and political changes leading to the eventual abolition of slavery.