I’m not sure anybody has yet helped the Koryp with the specific question asked. It has been too long since I studied history to help much but…
IIRC>>
Simony was practiced, but to define it and say it happened is less than half the truth and half truths are as bad as lies, frequently. From the time that the Church was made legal by Constantine there was a titanic struggle for independence of the church from state control. The pope had no army usually and had to rely on other kings for protection from kings who wanted to control the pope & and the church. Kings demanded the right to appoint bishops in their relms and often the pope had no effective way to stop them from taking the priveldge. You can’t excommunicate them all, after all. Who was it…Henry II of England that appointed his friend, Thomas Beckett (who was not even a priest) as archbishop of canterbury. The pope could not stop him.
And that worked in reverse too. The state (kings, princes, etc.) longed for freedom from the church. Despite the negative “Enlightenment” characterization of the church that your teacher uses without really understanding where he got it, the church was the best hope the people had for protection from the whims of their rulers. And the church did provide excellent protection much to the irritation of the ruling classes. The church also was usually the sole source of medical care and welfare for the people as well.
In any case, in the midst of this centuries long titanic struggle for control and independence between the church and the state, simony crept in. The church maintained some control over the who became bishop and the Kings and princes had a say, too. Not a good solution but the church needed money for all its works and simony was a source. MANY (most?) church leaders comdemned it but could not figure out how to end it … the kings had the armies after all, not the church. In the end, the council of Trent slammed the door shut once and for all.
i could be wrong though…