They (as in the poor and lower class) began to question the rights of the Caliphs to be ruling/guiding them. There was negligence in the government and no one was running it properly allowing for the Turks to gain the upper hand causing riots not to mention Muslims and non Muslims were clashing ideas. The empire got to big and out of hand for anyone to control.
Big business shaped the American economy in the late 1800s and early 1900s by outproducing smaller "family business," which drove prices down. This happened in large part due to the Industrial Revolution.