Complex sentence: The Signore families of the Italian Renaissance were able to bring the control of large cities under their families power, which allowed them to set up elaborate courts and the government in a manner that aided their needs.
Split into simpler sentences: The Signore families of the Italian Renassance were able to bring the control of Large cities under their families power. Allowing them to set up elaborate courts and set up the government in a manner that aided their needs.