The foundation of the Dominion was the trigger for the Great North American Transcontinental Railroad Race.
As part of the compromises that led to the formation of the Dominion, British support for a railroad from Texas to the Pacific was promised. The final agreed to route was as much if not more due to political compromise as to the geography of the continent.
It was planned that the terminus of the route would be San Diego, but a direct route there was not possible due to concerns about the disposition of the British end of the Central Valley of the Californias. It was felt by British and Southerner alike that if a guaranteed route for settlement into the valley was not established, the region would become American by default from immigration from the North, and thus the rail route was planned to head north along the coast to have a spur going into the valley. The route then planned to follow the already established Texan Road to Texas. However, there was also the problem of what route the railroad would take from Texas to the 'Old South' of the Dominion. The obvious route would be one that connected with the already established transportation routes and population centers that hugged the coast. However, these had also been heavily involved in the Slaver Uprising, whereas the highest concentrations of Loyalists were to be found among the border provinces. In the end, a compromise was struck here - the development of a northern route starting in North Carolina, crossing the Appalachian Mountains into Tennessee, then jumping the Mississippi to Arkansas. In addition, improvements and additions would be made to existing railroads from Georgia along the Gulf Provinces to cross the Mississippi in Louisiana. After entering Texas, the two routes would begin to converge towards the crossing of the
Trinity River at a site surveyors would name
New Dover inspired by the nearby white chalk cliffs of the area. From there the route would be one, converging with the Texas Road, though a spur would be constructed from the Southern route to the Texas coast.
However, the official government route would not be the only proposed transcontinental railroad either on the continent or in the DSA.