What section of the above passage best supports what Thomas Carlyle says about the printing press that it was creating a whole New Democratic world

The best answer for this question would be:

"He who first shortened the labor of copyists by device of Moveable Types was disbanding hired armies, and cashiering most Kings and Senates"

These problems that were stated in the passage gave birth to a new idea of a democratic world, in which the invention of the printing press was created to solve these problems.