Answer: The correct answer is : The decision of this trial contributed to the Civil War
Explanation: In 1857 the Supreme Court of the United States determined that Dred Scott and his wife would not be released, arguing that slaves living in free states were not free and that African-Americans would not be considered citizens of the United States and also had no right to sue .
I mean... Eventually some kings left the Papal authority. However, remember the crusades? It united nearly everyone in Europe. Some to the point of making new states.