What was lost after the roman empire fell?

Basically, the idea of classical styles of art and learning was lost as well. A few limited people were literate and educated.

Explanation:

These ideas were performed during the Roman Empire, but after the fall of Rome, the Germanic Tribes took over, and they just did not restore learning. The Middle Ages began with only based on Fedualism, and the King would also be illiterate. They would rely on priests in order for them to help the king out. It isn't until Renassiance brought back these ideas.

the answer is "by providing data about careers and annual mean wages"