Student or Learner
Hi, this is from my reading class.
I don't know what the underlined part mean.. What does it refer to?
What does "did" mean?
Egypt's settings were uniquely favorable to early settlement and the development and survival of a centralized state, comprising as it did the long, narrow valley of the Nile, its rich alluvial soil bounded on each side by the arid desert, beginning either witha gentle slope or with a marked escarpement.