"Politics and government" . . "Northwest, Old" . . "Estados Unidos" . . "EE. UU." . . "United States" . . "United States." . "Commerce." . . "1783 - 1865" . . "1815 - 1861" . . . . . . . . . "The old Northwest as the keystone of the arch of American federal union a study in commerce and politics"@en . "The Old Northwest as the keystone of the arch of American Federal Union a study in commerce and politics" . . "The Old Northwest as the keystone of the arch of American federal union; a study in commerce and politics" . "The Old Northwest as the keystone of the arch of American federal union; a study in commerce and politics"@en . . . . . "The old northwest as the keystone of the arch of american federal union a study in commerce and politics" . . "The Old Northwest as the keystone of the arch of American federal union a study in commerce and politics"@en . . "History"@en . "History" . . . "The Old Northwest as the keystone of arch of American Federal Union: a study in commerce and politics"@en . "The Old Northwest : as the keystone of the arch of American Federal Union"@en . . . . . . . . "The Old Northwest as the keystone of the arch of American Federal Union : a study in commerce and politics"@en . "The Old Northwest as the keystone of the arch of American federal union : a study in commerce and politics"@en . . . . . . . . . .