Answer:
The controversy arose from the different points of view between the practicing of artisitc works of the life of Christ between Rome and Constantinople.
Step-by-step explanation:
During the 8th and 9th centuries, in Byzantium, the churches and monasteries started to be decorated with frescos that were depicting Christ, Virgin Marry, and many other saints. The people seemed to love it and saw it as something that brings them closer to God and the saints while the religious and political authorities were also gradually accepting this and saw nothing wrong with it.
In Rome, on the other side, this was seen as a sin and something that should not be allowed. Rome tried to persuade the authrities in Constantinople, but its rhetoric was very bad and aggressive, which just backfired to it. This led to tension between the two sides, resulting in the separation of the churches and the formation of two different branches of Christianity, Catholicism in the West, and Orthodox in the East.