Question: Who wrote a letter to Orville Browning where he recognized the importance of one of the four slave states that never declared a secession in the Civil War?
Sentence (from "King Cotton"): The slogan, widely believed throughout the South, helped in mobilizing support for secession: by February 1861, the seven states whose economies were based on cotton plantations had all seceded and formed the Confederacy (C.S.A.).
Relevant evidence: No