Explanation:
racial segregation was a system derived from the efforts of white Americans to keep African Americans in a subordinate status by denying them equal access to public facilities and ensuring that blacks lived apart from whites
It would be "Whether a new state or territory should enter the Union as Free or Slave" that had the most impact on the Civil War, since the North was strongly against the spread of slavery, while the South was in favor of it.
The painting of Barnett Newman's Cathedra evoked different emotions and reactions in people and was attacked by someone who didn't like abstract art. The correct option among all the options that are given in the question is the third option. The person who attacked the painting was Gerard Jan Van Bladeren.
