The sinking of the Lusitania in 1915 had a very negative effect on the American public opinion of Germany, since it was the Germans who sank the American ship for seemingly no reason.
All except improved distribution
They could both serve as soldiers. :)
Resolved, that this Congress will apply to His Majesty for a redress of grievances under which his faithful subjects in America labor; and assure him that the colonies hold in abhorrence the idea of being considered independent communities on the British government, and most ardently desire the establishment of a political union, not only among themselves but with the mother state, upon chose principles of safety and freedom which are essential in the constitution of all free governments, and particularly that of the British legislature.
SO BASICALLY POLITICAL UNION