The name commonwealth is derived from the Commonwealth of Virginia which is where this map takes place.
This map is set 30 years from the setting of the previous map in the 1890s (Janu– December 31, 1899) a period of American history where railroads were nearing their peak and were deeply ingrained in the economy and culture of the nation. This is a comprehensive guide to operating on the map gm_commonwealth_1890 giving an overview of industries, chains, and towns you will find on the map.