The Trent Affair was a diplomatic crisis that took place between the United States and Great Britain from November to December 1861, during the U.S. Civil War (1861-65). The crisis erupted after the captain of the USS San Jacinto ordered the arrest of two Confederate envoys sailing to Europe aboard a British mail ship, the Trent, in order to seek support for the South in the Civil War. The British, who had not taken sides in the war, were outraged and claimed the seizure of a neutral ship by the U.S. Navy was a violation of international law. In the end, President Abraham Lincoln’s administration released the envoys and averted an armed conflict with Britain.