Final answer:
The principal motivation for drafting the Bill of Rights was to protect the individual freedoms of American citizens from government interference.
Step-by-step explanation:
The principal motivation for drafting the Bill of Rights was to protect the individual freedoms of American citizens from government interference. The Bill of Rights was added to the Constitution in response to concerns by the Anti-Federalists that the Constitution did not adequately protect individual liberties. It was also influenced by documents like the English Bill of Rights and the Virginia Declaration of Rights, which guaranteed rights such as the right to bear arms, the right to trial by jury, and protection from cruel and unusual punishment.