Complex sentence: Slidell soon accepted a diplomatic appointment to represent the Confederacy in France.Slidell was one of the two Confederate diplomats involved in the "Trent" Affair in November 1861.
Split into simpler sentences: Slidell soon accepted a diplomatic appointment to represent the Confederacy in France. John Slidell was one of the two CSA diplomats involved in the "Trent" Affair in November 1861.