They constitution protect slavery in a way that you can pay people to work for you but you cannot make them do it they have to be their on their own consent and it proctect slavery because people were dying from being overworked and underpaid.
Answer:
A prolonged war and greatly increased the number of casualties in the war
Explanation:
In World War I we saw the introduction of chemical weapons, machine guns, artillery, and tanks. All of this resulted in trench warfare and the lack of tactics to fight the new weapons meant that the war would be longer and a lot deadlier than it would have been without those weapons. It dragged for years from one stalemate to another and claimed a lot of lives.
The constitution, slaves, white people, and more slaves
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.
The correct answer is Europeans. I hope this helps! :)<span />