This short essay #13, Advantage of the Union in Respect to Economy in Government, is a cost analysis by Alexander Hamilton arguing that a union would be much more cost efficient for the new country than having each state burdened by administrative overhead and spending for smuggling prevention as well as defense.
The counter argument by the anti-federalists was that stronger state governments would be closer to their constituents. They favored liberty over economic efficiency.
Credit for the summary and analysis is given to Brittany Nelson and Christopher Higgins (second revision 09/15/2011). Weinbloom, Elizabeth ed. “The Federalist Papers Essay 13 Summary and Analysis”. GradeSaver, 30 December 2011 Web. 17 January 2019.