Answer:
They believed the political, economic, and social systems of France were unfair.
Explanation:
SO after reading i was still confused but i looked one more time and this is where i got my correct answer from:
In 1789, members of the French social class known as the "Third Estate" (peasants, merchants, and artisans) rose up against what they believed to be the unfair political, economic, and social system. This uprising is known as The French Revolution.