The author' choice to use "Euphrates" and "veldt" suggests that this city is connected to the greater world.
This has to do with the selection of words which shows that there are meanings for each word to convey a message.
With this in mind, we can see that the word choice of using "Euphrates" and "veldt" suggests that this city is connected to the greater world because this was the port of entry for different people to come and trade.
Read more about word choice here:
https://brainly.com/question/8927240