Who had preserved copies of Greek and Roman books.

After the Fourth Crusade (1202–1204) and the Sack of Constantinople (1204), scholars such as William of Moerbeke gained access to the original Greek texts of scientists and philosophers, including Aristotle, Archimedes, Hero of Alexandria and Proclus, that had been preserved in the Byzantine (Eastern Roman) Empire.

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what are the options ?

question 10: the answer is c, to their constituents address a problem.

question 11: i think it would be domestic bills, which deal with american issues only and public bills, which affect the whole nation.