Morris Said:

In what grade do we first learn about the railroad (and its effects on the US) in Social Studies class?

We Answered:

It depends on which effects you are looking to focus on.

I suggest 10th grade due to the graphic nature of Rape, Torture, Slavery, and Murder of many Native Americans and Chinese. Don't forget the expedited manner we could could slaughter buffalo, move weaponry, strip mine, and cut wide swaths of ugliness through nature.

If you would like to keep it soft you can assign a "John Henry" reading as early as 4th.