Uffindell, Andrew. "Hell on Earth: Anglo-French Intervention in the Civil War"
Divergence: 1860 CE
What if: Prince Albert died in a carriage accident and was not alive a year later to moderate the British government's reaction to the Trent Incident.
Summary: Scenario in which Confederate agents escalate the Union-British tension with manufactured incidents along the Canadian border. The U.K. intervenes in the American Civil War, quickly followed by France. Except for some early success around the Great Lakes, the Union is eventually forced to sue for peace.
Published: In Dixie Victorious: An Alternate History of the Civil War (ed. Peter G. Tsouras), q.v.