The transcontinental railroad runs from the to the i. north ii. south iii. east iv. west a. i and ii b. ii and iii. c. iii and iv d. ii and iv

C. III and IV

Explanation:

With the construction of the First Transcontinental Railroad, it was possible to connect the coasts of the Pacific Ocean with the Atlantic Ocean, so the railroad traveled from east to west. For the first time in history, a railway network connected two sea coasts and thus the project is still a reference in the field of railway construction.

This is because the construction of the First Transcontinental Railroad was very difficult. Several applications of engineering and work techniques were required for its development, as the railway had to pass through high mountains and various types of plains along the Union Pacific Railroad and Central Pacific Railroad, which gave rise to the eastern and western lines.