Pretend you are a poor person living on the east coast of the U.S. post Civil War, during Reconstruction and Westward Expansion.
You hear of a law that the government has passed called the Homestead Act where you can go out west and get cheap land. Given the fact that there is not a lot of upward mobility where you live (your grandpa was poor, your dad was poor, and your children will most likely be poor), would you be a settler and go out west? (Even though you now know in 2021 what happens to several Native American tribes).
No, I will not be a settler and go out west because there is no opportunity there for changing social status. There is very less job opportunities in the west so I prefer to stay in the old place and find a job to better by social status. There are more opportunities in the old place due to higher mobility as compared to the west. So that's why I choose to stay at the old place instead to be settler and go to west.
After the French and Indian war, the Treaty of Paris draw lines of British land and french land. The French lost some of their holdings, while Britain gained some. The picture should help.
It would be primarily "D. executive power" that gives a state the authority to protect the health and safety of the state’s citizens, since these powers can be acted upon without express approval of a legislature or court.