The Federalist Papers served the purpose of:
a. supporting the ratification of the constitution by the state of Virginia
c. opposing the ratification of the constitution by the state of Virginia
b. supporting the ratification of the constitution by the state of New York
d. opposing the ratification of the constitution by the state of New York
Generally speaking, the Federalist Papers served the purpose of "a. supporting the ratification of the constitution by the state of Virginia", since Virginia was one of the most "important" states at the time.