I do not have your choices of "the following" Here are some reasons I learned: Christianity, empire was too big and became hard to manage, there were many nonromans attacking parts of empire- Goths, the emperors themselves were weak or insane intrigue was rampant.
Fully associating to your representations for positive purposes.
Stepping back from your own mental map to get distance from emotionally charged representations.
Creating empathy.
Learning things by getting valuable insights into another person's map of the world.
<span> Technology culture( i think)</span>
