The believed that the federal government should possess all powers not specifically denied to it.

The correct answer is the Federalists.

Federalists were a group of individuals who believed that the federal government should possess more power than state governments. Federalists argued that a weak federal government resulted in a disorganized union. The failure of the Articles of Confederation and Shay's Rebellion were two events that supported the federalists point of view.

This is why the federalists believed that the federal (aka central) government should have all powers not specifically denied to it.

the answer is a new goverment.