I believe your answer would be C! Hope this helps =]
Answer: The Second Great Awakening was a Protestant religious revival during the early 19th century in the United States. The Second Great Awakening stimulated the establishment of many reform movements designed to remedy the evils of society before the anticipated Second Coming of Jesus Christ.
Explanation:
I think its trains but it also might be cars. I dont imagine there would be cars in rural areas. So probably Trains. If I’m wrong, please correct.