***** NOT A TEACHER *****
(1) Great question!
(2) I, too, am waiting for the answer.
(3) May I just add these little points while you and I are waiting:
(a) Yes, if my readings are any gauge, this use of "would" is very common.
(b) You really raised an important point.
(i) Someone many years ago in The Times Literary Supplement (which is
considered the most erudite book review in the world) said this use of "would"
was absurd. He said that if a writer used "would," then that meant the writer was
present at the time of the event and that s/he was able to predict the future. In other
words, was the writer in Jos? If s/he was, how did s/he know at the time that it
"would" end in 200 deaths? If the writer is writing after the deaths of the 200 people,
then "good, clear" English calls for "ended."
(4) I am sure that other posters will explain to us why "would" is not only common
but also correct English.
Student or Learner