I suppose that for the purposes of the discussion, we'll be starting off with the premise that the Second World War never comes to fruition, or at the very least sees little to no American involvement. Now without the economic boom that took off with and continued after the gearing up of war production IOTL, how would TTL's America look in terms of population growth until the end of the century? I'm guessing no baby boom on account of the slower economic recovery, though beyond that, I was hoping you guys might have some more distinct ideas. For instance, what sized population are we looking at by century's end and how fast is it growing?
By the 20th century, I was thinking that most of America's population growth would be driven by internal factors as the quota system for immigration was being firmly adhered to, limiting the impact that large scale immigration would wield. Unfortunately, that largely leaves me looking at economic factors, which is something I'm not as familiar with.
Any ideas?