Why do you think ancient Greek and Roman learning
disappeared from the West?

Because in middle ages after the fall of Western Roman Empire years of turbulence led to lost of knowledge, which was not in a focus of barbaric rulers until the period of Charlemagne the Great. That is why in those dark ages we have lost many things that ancient scholars left us.

Explanation:

After Roman Empire collapsed in 476, many Barbaric kingdoms were created on its soil. Most of them didn't lasted that much, such as Kingdom of Vandals or Kingdom of Ostrogoths. Most of them loathed and destroyed the heritage of Roman Empire and that is why for centuries we have lost many important information on that period.

the hyksos invasion. the hyksos were able to attack egypt successfully because of their skills in using bronze weapons, composite bows and the use of the horse and chariot during the invasion. although the egyptians depict a barbarian-type overthrow, the truth is the seizure was likely a relatively peaceful one.

opinion because one person might not like silk