English ideas about government and civil liberties developed a. around the year 1066. b. with the arrival of the anglo-saxons. c. before the arrival of the normans. d. over a period of many centuries.

The correct answer here would be D.

The ideas of about civil liberties and government did not happen over night but over the course of several centuries, officially starting when king John signed and which was the first document to limit the authority of the ruler.  Many more documents for the succeeding centuries gave birth to the parliamentary monarchy including The Petition of Right, the Habeas Corpus Act of 1679, the Bill of Rights from 1689 among many others.