How the Trent Affair could rally Britain for war

Would the British public have supported war with the United States over the Trent Affair?

Possibly, if American actions appeared to attack or insult Britain, but not simply to help the Confederacy defeat the Union.

Sympathy for the American South was distinct from outrage over national treatment. Entering the Civil War simply to support the Confederacy would not be popular in Britain. If the United States fired on a British warship or made the crisis look like an attack on Britain, public support could shift sharply. The exchange shows how the framing and immediate cause of a conflict can matter more than the side that ultimately benefits.