Disgustipated
Deity
Ok it can be clarified a bit. In north america the deserts are almost terrafomed into paradise comparatively to how they were. However, we are not talking about terraforming, we are talking about improvements. Ancient people's lived in those north american deserts. They built stone houses and graineries and with irrigation farmed desert land.
This has not been limited to north america. Many great ancient empires were built in the desert. Egyptian, Babylonian, Mesopotamian, Carthaginian, Persian, ect. ect. all came from a desert environments that was IMPROVED upon for man to live there. They built farms, buildings, had animals, water wells, ect. ect. The peoples adapted, yes the improvements were not the giant farms of the Midwest US of today - But ancient peoples have often populated deserts on all continents and have adapted to do so.
Of course this all depends on how much desert we see in civ V. Gameplay is more important, I just dont want people to use a realism argument against desert improvements when so many people have lived and do live in deserts.
I'm not seeing this america. No offense to your post. I live in the mojave desert. It is desert! My city only exists due to food from other states. We would not be a city of 2 million without trucking and refrigeration. Many of these "cities" you mention in the 19th century in Utah and other places were little more than towns. And what you fail to mention is they were built on or near water sources. Which in civ terms is represented by river or an oasis resource.
I feel rivers and oasis resources adequately represents the extent that we can improve deserts. Yes there are towns in the desert. Most of these would be equivalent to a size 1 or 2 Civ4 city. Other cities are located next to rivers (which is represented in civ4 by flood plains). Cities such as mine are completely unsustainable on their own.