The main reason was that so they get to have the land.
This question is a good one. It has a lot to consider. That includes the advantages and disadvantages of the Industrial Revolution. Depending on the person the opinion may differ on which had more. Though society did progress by the Industrial Revolution, and it created the fast, pleasure seeking life we enjoy today. It also affected human life and even more nature. Better said the Industrial Revolution did alter humanity and nature. Whether that is bad or not we are still watching today, as the Industrial Revolution only continues .
The term that describes the concept of having three branches of power is : Separation of powers
This concept prevent the Government from becoming too powerful and untouchable by its own law
hope this helps