What are the key epistemological issues raised by Eugen Weber as he reflects on the nature of historical scholarship?

I am having a hard time understanding what the above question is asking me... DO you mind clarifying the above question for me?

Thanks alot...

Are you clear on the meaning of the word "epistemological" (or if you look it up "epistemology")?

That's the first key.
http://www.answers.com/epistemology
and
http://en.wikipedia.org/wiki/Epistemology

Then you need to be clear on who Eugen Weber is and what he's known for:
http://en.wikipedia.org/wiki/Eugen_Weber

Now ... what do you think this question is asking?