The ___ was completely cut off from the rest of the Confederacy. railroad
South
Trans-Mississippi region
Mississippi River
North

Which statement best explains why a supreme court opinion is a seminal document? an opinion can become quite lengthy, which makes it a seminal document. supreme court documents are the only seminal documents in the united states. an opinion may create major changes in the laws or policies of the united states. generally speaking, a supreme court opinion reflects the feelings of all americans.