It is likely that some First Nations supported the railway, while others did not. Some First Nations probably supported the railway because it gave them a chance to trade more extensively. Moreover, it was a convenient and efficient method of transportation. However, others might not have liked the idea. They might have mourned the loss of their land and the expansion of settlers, as well as the damage to the natural environment (in particular to the migratory patterns of bison).
The correct answer is A. The French Revolution affected the French colony of Saint-Domingue, today's Haiti, inspired the Haitian people to mount their own rebellion for independence.
Explanation: you should put the options to answer the question but the answer is A because the passage is mainly concerned with reporting what is the kind of author's view about a phenomenon.