“How does Geoffrey of Monmouth’s History of the Kings of Britain echo the main theme of the Aeneid?

The Aeneid describes in an epic fashion the destiny of the Roman people to bring peace to the world through conquering the nations and bringing civilization. Geoffrey directly echoes this idea as Brutus receives a prophecy that his descendants will govern the earth. So Geoffrey depicts the British people as being the heirs of the Roman destiny.

— Defense of the Faith student workbook question, from Old Western Culture curriculum.