The United States of America is huge country, the 4th largest in the world, filled with a great diversity of people, landscape, weather, and economy. Our major rivers the Mississippi and Missouri rivers combine to form the fourth largest river system in the world. In the 1800s these rivers...
The success of the route also owes as much to the construction of the numerous tunnels that punch through dozens of towering peaks that blocked the highway’s path. One of the more impressive of these tunnels leads to the east end of the Siduhe bridge and makes for one of the world’s...