In Dred Scott v. Sandford (1857), the Supreme Court declared that blacks could not be United States citizens and that the 1820 Missouri Compromise was unconstitutional. The decision inflamed sectional tensions and helped trigger the Civil War. The decision was published simultaneously in New York and Washington, D.C. Both are considered the First Edition. In his “House Divided” Speech, Lincoln replied that the decision did “obvious violence to the plain unmistakable language” of the Declaration of Independence and our other founding documents.
