Question
How can overcrowding contribute to the collapse of a civilization?
Answer: The more people you have the more resources/food is necessary to keep them alive you have more people then resources/food they civilization will collapse, because its over populating the area more than the civilization can supply.
The executive department that deals most with foreign countries is the "State Department", which is headed by the Secretary of State--a position that is appointed by the President.
The first one is correct answer “he ran for president in 1824”
The Soil in Canadian Shield was rocky. It was a dense soil and was poor for agriculture.