I think it’s D but I’m not completely positive
<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be the "railroad," since rail travel allowed for people and supplies to move to the west at an unprecedented pace. </span></span>
The correct answer should be 1. East. They found a way to go through the Mediterranean sea into the Arabian Gulf and from there into the Indian Ocean, which allowed them to land on the eastern coast of Africa and establish trading stations for resting or reorganizing or fixing ships or things like that.
