What was the immediate effect of the Compromise of 1850 on South Carolina? es ) A) The secessionists overruled the unionists and cooperationists to draft the Ordinance of Secession. B) The unionists overruled the cooperationists and secessionists to develop policies toward a slave free state. C The secessionists, unionists, and cooperationists decided at a convention that secession was not necessary yet. D The cooperationists overruled the unionists and secessionists to lead South Carolina as an independent slave state without the help from other southerners. ​