Respuesta :
Answer:
The answer is a.
Explanation:
A is the best answer, it made it much easier to travel from East to West via Train.
B is not correct, the Transcontinental railroad went from east to west, not north to south. Besides, you could already ship goods via sea.
C and D are ridiculous.
Answer:
D: it became much easier to travel from the East to the West.
Explanation:
