Augustus was the one that was concerned with marking the Empire's borders
Okay the main difference is "power" is what they can do, "Authority" is was power they already have.
In English history, the Magna Carta (1215) and the English Bill of Rights (1689) both reinforced the concept of a limited monarchy. Option B is correct.
The English Bill of Rights was an act that entered inforced in 1689 after signed by William III and Mary II. The English Bill or rights set out specific constitutional and civil rights and ultimately gave Parliament power over the monarchy.
The Magna Carta is a charter of rights agreed to by King John of England at Runnymede, near Windsor, on 15 June 1215.