Intercontinental Railway
Stretching from the south of the Ilmarian Imperium (Nation)'s landmass all the way to the North, passing through the Alrussian Federation (Nation) and then back down south through the Umissian Republic (Nation) before curving back around and heading along the opposite side of said nations; the Intercontinental Railway is a union of various rail networks throughout The Three Kingdoms (Continent).
Planning started in the early 1850's and even through the various wars between the nations, it finally came to be and would last right until the modern day.