Federalist No. 8 is an essay by Alexander Hamilton, the eighth of The Federalist Papers. It was published on November 20, 1787 under the pseudonym Publius, the name under which all The Federalist papers were published. In it, Hamilton argues for the utility of the Union to the well-being of Americans, specifically addressing the negative consequences if the Union were to collapse and conflict arise between the states. It is titled "Consequences of Hostilities Between the States".