the creation of a home market is not only necessary to procure for our agriculture a just reward of its labors, but it is indispensable to obtain a supply of our necessary wants. . . . suppose no actual abandonment of farming, but, what is most likely, a gradual and imperceptible employment of population in the business of manufacturing, instead of being compelled to resort to agriculture. . . . is any part of our common country likely to be injured by a transfer of the theatre of [manufacturing] for our own consumption from europe to america?