The Constitution enumerates certain powers which are reserved to the federal goverment and other powers which are delegated to the state.
Those powers which are not explicitly related in the document to any of the goverment levels will automatically be reserved to and exercised by the supreme federal goverment.
I believe that the answer to the question provided above is that the westward expansion created a clash between sectional interests in Missouri because of the geographical location of Missouri it was being clashed.Hope my answer would be a great help for you.
Ecology is the study between humans and their physical environments
Answer: B
Explanation: AOC had no power to put down rebellions because they had no power themselves