The southern pacific railroad was a federalized government subsidized construction where the community from the west pool their resources , because they have been demanded a railroad that is connected in the markets of the west. this was done to have the government step out of its way.
The most expectable answer is socialization.
This term is used to describe the process in which people learn the values, norms, and beliefs of a particular society/culture.
Therefore, for this indian couple, their early and previously-arranged marriage is nothing unusual because they were taught that's the most common thing for (indian) people to do. And you, well, you were taught differently; probably: that is better to wait until you grow old enough, and are sufficiently independent, to support a household. So, you get a "cultural shock" by hearing about how this couple got married.
