Why did Rome decline?

The Roman Empire could not respond to the challenges of the time, could not unite in the face of the enemy, and Christianity, as a weak fanatical religion of non-violence (at that time) could not unite the people into a nation.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.