Why did Western Europe slip into the dark ages?

The fall of the roman empire is the most cited reason for the collapse of the civilization in Western Europe and for the slipping in the dark ages.

As the Central government disappeared with the fall of Rome rules disappeared and the countries that were under the roman rule went into chaos.

Because most of the countries' resources went to soldiers and farmers it was hard to fund education and so illiteracy developed

As the Roman empire collapsed tribes started fighting each other to survive. Previously the roman army gave protection to those tribes but as it disappeared those tribes felt unsafe and started fighting each other.

Feudalism was a system developed after the fall of Rome where strong people took over pieces of land in exchange of providing labor and protection to the weak people.

Some people argued that the Church's attitude towards learning was one of the reasons of the collapse of the civilization. Those people believe that the abuse of Christianity, had some influence on the decline and fall of the Roman empire’.

Some people cite the invasion from barbarian tribes as the reason education wasn't was a priority and so believe those invasions caused the Dark Ages.

As the Roman empire collapsed the network of trade they had collapsed which led to further deterioration in Europe.

The plague that arrived to Europe is believed to be one of the reasons that assisted in the deterioration of civilization.

During the Dark ages it's believed that the rich and powerful took what they wanted by the power of the sword and thus the community's structure changed and order disappeared.

As the Roman empire disappeared the laws also disappeared thus leaving people to live by their own rules. The strong took control of the resources while the weak worked for them.