After the fall of Rome, where was the knowledge of Greek language and learning maintained?

After the fall of Rome wasn't the actual fall of Rome but actually only the western part of rome has fallen I believe the key of keeping their language and history on scriptures and texts, even though we know little about certain topics such as what's Greek fire made of the eastern empires still lived afterwards wtih some valuable reelects, and acient texts remained of the Rome's past events and etc

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.

whose power in the senate is equal to the power of the speaker of the house?