The constitutional principle that was the main focus of the north south conflicts that led to the civil war was the right to own property, since many people in the South felt that slaves were included in terms of "property" that could not be taken away.
I believe that the first choice is the correct one
The pharaoh’s burial chambers are located deep within the pyramid, along with those of his 11 daughters. The burial chamber is part of the pyramid’s winding, maze-like series of tunnels, which researchers think may have been designed to prevent theft
The French government’s indifference to affairs in the New world
Answer:
It temporarily avoided a civil war again, popular sovereignty being used as a factor to decide whether the state will be free or a slave state. The slavery issue is becoming worse and more violent. This is igniting the fire of civil war. It effectively repealed both the Missouri Compromise 1820 and Compromise of 1850.