Complex sentence: In 1862, after Baton Rouge fell to the Union troops during the Civil War, Opelousas was designated the state capital for nine months, and the governor's mansion in Opelousas stands to this day.
Split into simpler sentences: In 1862, after Baton Rouge fell to the Union troops during the Civil War, Opelousas was designated the state capital for nine months. The governor's mansion in Opelousas stands to this day.