The north launched an offensive against the south that lead to the overwhelming of the south and the fall of Saigon.
The answer is C <extra characters to let this app accept this answer>
Americas desire to move westward is good because it has much different climate and it prevents it from becoming overcrowded. Two conflicts that occurred are more people wanting to go and people dying on the way to a new state.
That would be Urbanization, the process of making a place in nature into a habitat for humans.
