How is the account of muslim expansion in document b similar or different from the account in document a?

by creating a labor shortage that pushed the continent toward a market economy

it further strained relations between the north and the south and convinced

lee and grant, both of whom held the highest rank in their respective armies, had known each other slightly during the mexican-american war (1846-48) and began their dialogue by exchanging awkward personal inquiries. characteristically, grant had arrived in his mud-splattered field uniform while lee had turned out in full dress attire, complete with sash and sword.

explanation: