What type of POD could get slower (or delayed )American (POD after Louisiana purchase) Encroachment on the lands of native Americans? Delayed Indian Wars and settlement of the Western portion of the United States, that is.
What type of POD could get slower (or delayed )American (POD after Louisiana purchase) Encroachment on the lands of native Americans? Delayed Indian Wars and settlement of the Western portion of the United States, that is.
Nullification crisis of 1832 sparking a civil war? Successful Native American confederation? Far more restrictive immigration policies, such as a success of the Know-Nothing party?
How about a later gold rush? That's a good one, I think.
Could anything be done to improve the Isthmus of Panama, so even without a canal it's considered a safer/faster route to the West Coast than going overland?