In case of drastic emergency or fallout if the us were to stand alone it would need supplies it could get on its own
Unemployment was high and working conditions were poor.
Answer:
It's practiced in sparsely populated regions because of less things being in the way. This way, they can use irrigation more efficiently.
Glaciers shaped the landscape is the answer. Actually, in Nova Scotia near Halifax there is a glacial boulder or erratic of basalt which is deemed to come from about 130km away perhaps from the north or NW. Also, there are glacial striations there on the bedrock which can be used to determine the sense of the direction of flow of the ice. In New England, there are pro-glacial lakes. Both the Maritimes and New England were most likely covered by the Laurentide continental glaciation.
