22. in this letter, petrarch complains about the popes who have set themselves up in avignon. what is the
name of this particular historical event and who are the major players? explain why petrarch is upset
and tell how the situation was eventually resolved.

the three answers (for plato at least) are:

b-condemned sola fida 

d-set rules for establishing seminaries and for educating clerics in the seminaries 

f-recommended moderation in the sale of indulgences and banned the sale of false indulgences 

explanation:

an oligopoly is a term used to clarify the structure of a particular market, industry, or organization. a market is considered oligopolistic or amazingly focused when it is shared between a few companies.

this is a good question! i'll do some research and come back when i have the answer!