The purpose is to inform the reader in great detail about a specific topic.
During their courtship and marriage, John Adams and Abigail Smith Adams exchanged over 1,100 letters, many filled with intellectual discussions on government and politics considered an invaluable account of the Revolutionary War. Abigail, a fierce advocate of rights for women and African-Americans, was an important partner throughout John's political career.
Haven't read the book but this may be helpful to you:
"<span>In The History of the Kings of Britain, Geoffrey of Monmouth proposes to set forth the history of the British kings starting with Brutus and ending with Cadwallo. Geoffrey undertakes this endeavor at the request of the Archdeacon of Oxford who presents Geoffry with an ancient text to translate from British into Latin. The history of the British kings shows how fortune, jealousy, and betrayal can lead to the demise of an entire nation. On the other hand the text also details the qualities that are necessary in a good ruler who unites his people in peace. While Geoffrey's account reads like a novel, the basis for the book is historical and gives the reader a generalized view of British history."
source: </span>http://www.bookrags.com/studyguide-the-history-of-the-kings-of-britain/#gsc.tab=0
Answer:
The two signals which indicate the start of the third quatrain in line nine are:
A: There is a shift in topic.
B: There is a stanza break.
Explanation: