Question

One of the most important accomplishments of the national Congress under the Articles of Confederation was the creation of plans for both settling and governing the __________ ____________

Answer 1

Taking a hint from the double blank, I would try "Northwest Territory," since the Northwest Ordinance governing what would become the futures states of Ohio, Indiana, et cetera was passed by the national Congress before the Constitution was ratified. Additionally, many of the aspects of how the Northwest Territory was organized and governed became standards for later territories, and the governance of territories was the major responsibility of Congress right up until the Civil War.