Answer:
Passed by Douglas allow him to build a railroad from Illinois to CA. Has to cross uninhabited (at least by Americans) land, which since it wasn't American, could not be surveyed. Kansas, Nebraska, North and South Dakota. Douglas issues clause of popular sovereignty. Southerners say they will agree as long as he repeals Missouri Compromise and split of land creating Kansas so a pro-slave state can be formed there.
Step-by-step explanation: