Charles X of France was overthrown because he what?

Answer 1

had taken away the right to vote from the middle class

Louis xvII

Answer 2

....because he decided to suspend the Constitution, to censor the press, and to dissolve the newly elected Parliament (which had not given him the majority he wanted), at the same time altering the electoral system, and calling for new elections. All this led to the July Revolution of 1830 that disposed of him in favor of the new king, Louis Philippe.