Whom does the writer invoke in this passage?
 the gods
 a man at war
 the Muse
 the Alban lords
 The Aenid 
 by Virgil (excerpt)
 I sing of warfare and a man at war.
 From the sea-coast of Troy in early days
 He came to Italy by destiny,
 To our Lavinian western shore,
 A fugitive, this captain, buffeted
 Till he could found a city and bring home
 His gods to Laetium, land of the Latin race,
 The Alban lords, and the high walls of Rome.
 Tell me the causes now, O Muse, how galled
 From her old wound, the queen of gods compelled him— 
 To undergo so many perilous days
 And enter on so many trials. Can anger
 Black as this prey on the minds of heaven?