sentences:  Henry was outraged by the Jay–Gardoqui Treaty, which would have ceded exclusive navigation on the Mississippi River to Spain for 25 years.This was in exchange for commercial concessions that would benefit New England, where there was a growing separatist movement.Northern votes were sufficient to relax John Jay's negotiating instructions, which had originally forbidden restricting American navigation on the Mississippi, to allow him to reach a deal; Southern votes were sufficient to block the treaty's ratification.