For settlers in the northwest territory during the late 1700s, an important geographical feature was the
appalachians.
great lakes.
new orleans harbor.
rocky mountains.

Great Lakes.

Explanation:

The Northwest Territory was formed after the American Revolutionary War. The great lake is located north of America where much freshwater comes together and it consists of more than 6 rivers. Those who settle in Northwest during the late 1700s use the great lakes as a means of transportation, migration, trade, fishing and they also use it as means of irrigation on their farmland.        

d) post-world war i

your answer would be a) no nation can be economically self-sufficient.

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