I would go with True because any historian needs a lot of patience to get what they want or to learn about something etc..
Answer:
Due to addiction.
Explanation:
Captain Nixon continue drinking even though he has to hide his alcohol because he is addictive to drinking and can't resist to it. he does not get into trouble for his drinking because he is the highest authority on the ship and nobody can question him for his actions. If he is of lowering rank, then the higher authority on the ship can question him and can stop him from drinking alcohol on the duty. So that's why he continue drinking and not get into trouble for his drinking.
After the civil war there was a huge surge to rebuild the infrastructure of the U.S. many Americans wanted to move west to escape the horrors of the civil war, which started the race to the west coast (intercontinental railroad)
rail roads were way to move goods and raw martial on mass. rails roads could move supply faster and over a longer distance than using wagons or boats witch were limited on were they can go. causing an industrial boom.