What does it mean to say that the corporation is a legal fiction?

Legal fiction.The Modern Corporation as an Institution out of control
The question is What does it mean to say that the corporation is a legal fiction? Explain how the notion of legal fiction can help us understand the argument that the corporation is an institution that is dangerously out of control. I have attached two documents which are essential for the essay. Please write stuff from there only and no extra knowledge from the intrenet is required. Last time I got an essay done and it was way different from what I did in college hence couldn’t score well. It’s a social science and modern business essay.