Is it possible for the United States to be larger than OTL, given a POD after 1900?
Where would the most likely avenues for post-1900 American expansion be? Would this added land (and possibly peoples) be incorporated as extra states, or just territories?
Who would be disadvantaged by American expansion, and what effects would a larger USA have on the wider world? (a different/averted WW1, no WW2, etc.?)
Much obliged for your comments.