Delaware and Maryland both were free states.
In general, this movement had a negative impact since lots of the expansion involved moving into territories that were controlled by European nations. Although most of the time physical conflict was avoided.
The answer is A because if you know who Robert Fulton is, then you know that his steamboat is called Clermont, which makes it the answer.
According to Arab oral tradition, Islam first came to Africa with Muslim refugees fleeing persecution in the Arab peninsula
Frontier became a part of America's identity. It represented many things to Americans. Adventure, danger, freedom and opportunity represents the frontier. It is because of the end of the frontier, it had a psychological impact to Americans because the frontier became their sort of escape mechanism.
