Correction:
East of the Rocky Mountains, we would be speaking German. To the west, Japaneese, because that was the Axis plan, and no “country” under the Articles of Confederation would have won WWII . (WW 2)
But under the Articles we probably would not have entered WWI, which may have, in effect, averted WWII. (Fun conjecture!)
Regardless, no national government would have left itself as small as the Articles envisioned.