Simplify the following text for a Grade 7 native English-speaking person.
Original: The French Revolution of 1830 , also known as the July Revolution or Trois Glorieuses in French , saw the overthrow of King Charles X of France , the French Bourbon monarch , and the ascent of his cousin Louis-Philippe , the Duc d'Orl Ã ans , who himself , after 18 precarious years on the throne , would in turn be overthrown .
Simplified: The French Revolution of 1830 , also known as the July Revolution , was the throwing off of Charles X of France from power . His cousin Louis-Philippe , the Duc d'Orl Ã ans became king .