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.        

it provided for selection of government employees through competitive examinations. it also made it unlawful to fire or demote covered employees for political reasons or to require them to give political service or payment, and it set up a civil service commission to enforce the law.

explanation:

these acts divided the south into five military districts.