After the completion of the railroad, a major industry in the west was

Ranching

Explanation:

The majority of the West turned into ranching because of the geographical condition. The railroads helped people to move to the West to start a new life. The Great Plains helped people to open ranch. Ranching became possible because of cowboys who helped by herding cattle, horses and by repaired fences and buildings(stables etc.).

probally   a few days after there called

sorry i tried to but i didn’t get it