The region that seemed to provide the greatest obstacle to railroad expansion is The Rocky Mountains
For better understanding let's explain what it the Rocky mountain means
- Rocky Mountains is simply known as a linear chain of mountain ranges that is ranging from northern New Mexico, through Colorado, Wyoming, and Montana, then northward into Canada; rise abruptly above the high plains of the Midwest to the east
From the above we can therefore say that the answer The region that seemed to provide the greatest obstacle to railroad expansion is The Rocky Mountains, is correct
Learn more about rocky mountain from
https://brainly.com/question/15213246
