Hamilton in Federalist 9 is describing which principle?

While the rule of law is an important principle in governance, ensuring that laws apply equally to all individuals, it is not the primary focus of Federalist 9. Hamilton's argument centers on the structural organization of government rather than the enforcement of laws or legal principles, which makes this choice less relevant to the core message of the essay.

Popular sovereignty refers to the concept that government authority derives from the consent of the governed. Although Hamilton acknowledges popular support for the government, his primary concern in Federalist 9 is about establishing a strong federal structure rather than directly addressing the notion of sovereignty or the direct participation of the populace in governance.

Checks and balances, a system designed to prevent any one branch of government from becoming too powerful, is an essential aspect of governance discussed in other Federalist Papers. However, in Federalist 9, Hamilton's focus is on the advantages of a federal system rather than the mechanisms of power distribution and oversight among branches of government.