Alexander hamilton wanted to pay off all national and state debts to.
a) show the world that the united states was economically strong.
b) encourage farmers to support their government.
c) show the states that they should not print money.
d) encourage the development of more executive departments.

I believe the answer is: A. show the world that the US was economically strong.
The  paying off of National debt would indicates that united sates are able to efficiently utilize their resources and generate wealth for their people.
This perception would lead to more potential foreign investment since United states seem as a favorable business partner.