Forge of Destiny, while not a setting that bestows the talent for Cultivation on everyone, bestows it on enough people that there are armies of Cultivators and the strength of ones Cultivation has political significance. The focus of the setting is a boarding school for Cultivators, so you are very thoroughly immersed in the effects cultivation has on society. The strongest Cultivators can threaten armies of weaker cultivators singlehandedly, though armies can turn the tide in battles between high level Cultivators.
Cultivation is a system of self augmentation via drugs made with exotic materials and meditation that extends the lifespan beyond that of mortals. I could easily see a more constrained form of it existing somewhere in the Great Basin.
Unfortunately I don't think I have the karma to link it but you can find it on the sufficient velocity message boards.
Edit: Let's see if I can link it now that I've got karma(https://forums.sufficientvelocity.com/threads/forge-of-destiny-xianxia-quest.35583/)