The most controversial question regarding the conflict that claimed more than 620,000 Americans is: what caused the Civil War?
The Civil War caused more than 620,000 deaths, which was 2% of the U.S. population. The conflict produced more deaths than all previous U.S. wars combined. Even a brief introduction to the U.S. Civil War will prompt the student to ask, why was the Civil War fought? There are, however, two dominant positions: 1) slavery caused the Civil War, or 2) states' rights caused the Civil War.
One of the Supreme Court’s most important responsibilities is to decide cases that raise questions of constitutional interpretation. The Court decides if a law or government action violates the Constitution. This is known as judicial review and enables the Court to invalidate both federal and state laws when they conflict with the Constitution. Since the Supreme Court stands as the ultimate authority in constitutional interpretation, its decisions can be changed only by another Supreme Court decision or by a constitutional amendment.