Un United States

[12th Doctor]

Minor suggestion:

At this point Pittsburgh was already one of the most important towns in the United States (period).  Pittsburgh's strategic location, as it basically provided access the entire Mississippi River system from the East, and thus was the main point of focus for westward expansion and control of the economics of the entire area west of the Appalachians (or the Alleghenies as they were more commonly know a this time).  Any game representing this time period should represent that.

[12th Doctor]

Also, depending on when you are starting, Virginia claimed a significant section of Southwestern PA during this period.

[12th Doctor]

Another minor note, the South Carolina claim, extending west, was dropped pretty early on because it was found to be non-existent.  The pre-existing conditions that had been specified to make that claim possible simply had no basis in reality (has to do with the location of the head waters of the river, but I don't remember the exact details).