In the ruling of Barron v. Baltimore, the Supreme Court primarily based its conclusion on the following reasons:
A. The states had not yet incorporated the Bill of Rights into their governments.
B. States had their own protection of rights for their citizens in their state constitutions.
D. The Bill of Rights was in the United States Constitution, therefore it only restricted the federal government.
These points helped establish the precedent that the Bill of Rights applied only to the federal government and not to the states at that time.