text: The fact that both Louis and Charles ruled by hereditary right rather than popular consent was the first of two triggers for Les Trois Glorieuses , the `` Three Glorious Days '' of the July Revolution .
simplified: Both Louis and Charles ruled because of their birth , not because a great number of people wanted them to . This was the first of two things that began Les Trois Glorieuses , the `` Three Glorious Days '' of the July Revolution .