Hello. You have not shown the sources to which this question refers, which makes it impossible for the question to be answered accurately. However, I will try to help you in the best possible way.
A source that helps you to visualize a moment well, is one that presents a highly descriptive language that presents a large number of adjectives that inform you of many characteristics of that event, thus allowing you to form a mental image of what happened. Therefore, you should look for this type of language in your sources to find out which is the most efficient.
Explanation:
the railroad is thought to help as many as seventy thousand individuals though estimations vary from 40000 to 100000 Escape From Slavery in the Years between 1800 and 1865 even without the journey was grueling
Answer:
A, the reason is because the area is dominated by these religious groups, NOT ethnicities.