In chapter 2, What compromise was made at the dinner? What was the formal name of the compromise?

Jefferson recounts how he led the politicians to reach an agreement, by convincing Madison not to dissuade his party members from supporting the financial plan, even if he himself would not vote for it. In return, Hamilton agreed to use his influence to locate the new national capital on the Potomac River, a location that favored the Southern states which Madison represented. Ellis notes that Jefferson's account of the dinner is the only extant one. This deal would later be known as the “dinner deal”