How did the ideas of the philosophers of ancient greece and rome get lost for so many years?

No one could study the philosophers’ ideas, so they lost their importance.

Explanation:

After the collapse of the Roman Empire, Western Europe was severely fragmented. Therefore, the transmission of knowledge was greatly reduced, and many classical works that had been popular in the past were forgotten. However, these works, often written in Greek and Latin, had been translated into Syriac, Arabic, and Persian. This allowed other regions of the world to keep studying them, and to transmit them to Europe once more during the Middle Ages.

answer; i believe the correct answer is ( quakers);

i'm not certain but i'm pretty sure it was spanish and portuguese america.