Answer:
Stephan A Douglas was born in U.S . He was the leader of American political party and he worked on slavery problem.
Step-by-step explanation:
Stephan A Douglas was first elected in 1846 as a senator in U.S. He served there till his death. There he was deeply involved in the debate of slavery problem. He was best in the debate on slavery problem in between south and north extension of Westwood. Even he develop his theory of popular sovereignty under which people can decide that slavery should be permitted in their region or not.
Douglas never used a slave holder and his wife too. He became a winner in the passage of the compromise of the 1850 under the theory of popular sovereignty doctrine. His theory was reached under the act The act of Kansas - Nebraska act.