Final answer:
The Bill of Rights was integral to the ratification of the U.S. Constitution, addressing Anti-Federalists' concerns by protecting individual liberties, which helped secure the necessary support for ratification.
Step-by-step explanation:
The Bill of Rights was a crucial element in the ratification of the U.S. Constitution. The Anti-Federalists feared the potential for governmental overreach and the lack of protection for individual liberties in the newly proposed Constitution. To appease their concerns, and to secure the necessary support for ratification, Federalists promised to add a Bill of Rights that would enshrine essential freedoms and rights. After New Hampshire became the ninth state to ratify the Constitution, signifying official adoption, other pivotal states like New York and Virginia followed, though narrowly. The inclusion of the Bill of Rights was instrumental in the ultimate acceptance of the Constitution by providing safeguards against the concentration of power and guaranteeing individual freedoms.