why was the ratification of new york important to the constitution?

Answer 1

New York was right in the middle of the proposed country and if New York did not ratify, the northern states around Massachusetts would be divided from the southern states around Virginia and it would be difficult to grow a country. The vote was close in New York.

Answer 2

Check this article -- especially the part that Hamilton played in New York.

http://en.wikipedia.org/wiki/History_of_the_United_States_Constitution#Ratification