How did trade with civilizations in Nubia and Southwest Asia help the ancient Egyptian civilization grow?

the lowest among the social higher rank were the working class. this class remained detached to the political progression   of the country and was hostile to the other two classes

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:

is this question from a book? ?