Which supreme court case would have had the biggest impact on slaves in the united states?

I think the answer would be Dred Scott v. Sandford, Is that an answer choice?

im pretty sure it has something to do with the end of ww1

the section of the chart that represents a point at which a bill needs approval from a majority of people in both chambers to advance is j, as this is the only section before the bill becomes law which has both rows (symbolizing the chambers) converging into one, meaning that the two parts of the congress have to approve of it before it can march on with the process.