Alien Industrial Revolution

In his previous life, he failed to save his father's factory from bankruptcy, but died of physical and mental exhaustion. When he opened his eyes again, he became the eldest son of a down-and-out knight lord from another world: three hundred people, barren land, and high debts. Fortunately, he awakened the unique [industrial] magic: making steel, opening factories, building assembly lines, laying railways, developing finance... From a bankrupt small fiefdom to the industrial revolution sweeping the kingdom. In this life, he will rebuild the "factory" that he failed to save.