What french phrase denotes a sudden and illegal seizure of power?

This is called a 'coup': a sudden, violent and illegal seizure of power in a country.

How  did spanish  power increaseunder charles  v and philip ii? in 1519,charles  v inherited a huge empire. he became king of  spain  and was also the heir to the hapsburg empire. during his 42-year reign, philip worked to expand  spanish  influence, strengthen the catholic church, and make his own power absolute. hope this !