The document summarizes the origins of the Knights of the Golden Circle (KGC) organization in the 1830s. Originally called Southern Rights Clubs, they advocated reopening the international slave trade and acquiring new slave territories. In the 1830s-1840s, some clandestinely outfitted slave ships. They saw opportunities to expand slavery through the Mexican-American War in the 1840s and into the 1850s supported acquiring Cuba and repealing the Missouri Compromise. The organization grew but lacked structure until the 1850s when it was systematized and named the Knights of the Golden Circle, with the goal of expanding slavery and possibly seceding from the United States.