Khavayin is a region, not a single civilization. It comprises city-states, caliphates, emirates, stretches of nomad territory, swaths of wilderness, and even a few small island chains in the Jadesea. It contains multitudes. Each race is not a monoculture — the gnolls in the southern mountains have different traditions than the gnolls settled on the coast.
Humans are largely dominant, and have been present in the land the longest save perhaps the ogres.
Halflings, as usual, integrate into the settlements of larger folk. They adapt as servants, scavengers, and well-connected rats-of-all-trades.
Orcs have been raider clans in the wilderness for a long time, though some have urbanized. Half-orcs are fairly numerous due to intermarriage, and are popular choices for mamluks.
Genasi, that peculiar mix of human and elemental blood, are said to have had their origins as the offspring of human and genie pairings. A few genasi bloodlines have established themselves as true families.
Gnolls are a generally pragmatic, animistic people who prefer to occupy the wilderness. Gnoll mercenaries are valuable skirmishers to the officer that can win their respect.
Elves are rare and scattered tribes, most of them nomads who move within sandstorms. They are held to be descendants of the peri, the beautiful and aloof creatures of the Overworld.
Dwarves are more integrated into the cities of Khavayin. They hold a few independent fortresses of their own, though each fortress has its own subculture.
Tieflings are a rare but known quantity. Some descend from the Slumbering King’s court, others from wizardly households.
Living clockworks are also quite rare, but not unheard of. Automatons of copper and brass serve in the households of the truly powerful.
The holy ones, or Heaven-touched, are individuals with some measure of divine nature. They have no reliable bloodlines, though some claim descent from the pharaohnic households of Khera.
The drakha are a foreign nation of dragon-like people, who sometimes visit Khavayin on trade missions or baroque errands of duty.