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Mongolia


Tricks

Unique Ability: Mongol Terror

Declaring war directly on two or more City-States in quick succession will lower your influence resting point with nearby City-States and increase the rate of influence decay. To avoid this, declare war on a Civ allied to the City-State - there's no such associated penalty then.

Unique Unit: Keshik

As the unit retains the ability to move after attacking, it's able to move within city range, fire and move out in a single turn. Keshiks therefore are excellent against cities, although they can't capture them by themselves. Bring a non-upgraded Horseman or Lancer along with them to be able to safely finish the city off.
As ranged units, Keshiks only need two promotions prior to March becoming available (Barrage/Accuracy I and II.) Supported by Khans, you can easily get a horde of Keshiks healing 25HP every single turn.

Unique Great Person: Khan

Any Civ can receive a Khan of their own by completing the Patronage Social Policy tree and allying with City-States.

Hidden Features

Unique Great Person: Khan

Aside from land units, air units are also affected by the healing rate bonus, although naval units are not. Combine with the Air Repair promotion and the Faith Healers Pantheon for extra effectiveness.

Clarifications

Unique Ability: Mongol Terror

The bonus against City-States does not affect your ability to intimidate them.
Ranged mounted units (Chariot Archers, Keshiks) do not gain extra movement from the UA. Keshiks have 5 movement points, but that is a specific feature of the unit - if another Civ was gifted the unit, it would still have 5 movement points.

Unique Unit: Keshik

Camel Archers are classed as ranged units rather than mounted units, meaning:
Bonuses against mounted units do not affect them (e.g. Spearmen, Pikemen, Lancers)
They will use ranged promotions
Stables won't help you build them faster, but the Temple of Artemis will.
Despite being classifed as ranged units for combat, for purposes of construction, Keshiks still count as mounted units (so stables will boost their production while the Temple of Artemis will not.)
Keshiks, like all land-based ranged units, use their ranged strength when defending against ranged attacks. As such they defend slightly better against cities, Crossbowmen and suchlike than they do against Longswordsmen, Knights and other melee units.
Great Generals I offers a 50% bonus to Great General gain, but so does the Quick Study promotion (in addition to its XP benefit.) These stack multiplicatively, but the output is rounded during the calculation meaning the net contribution to Great General points isn't exactly 225%.
The Quick Study and Great Generals I promotions carry over on upgrade.
Melee-specific promotions (Shock, Drill, etc.) earned by Horsemen do not work when upgraded to Keshiks (with the exception of Blitz,) and ranged-specific promotions earned by Keshiks (with the exception of Logistics) do not work when the unit's upgraded to Cavalry.

Unique Great Person: Khan

Units only receive the healing bonus while they're in a state of healing (either not taking an action or with the March promotion.)
The healing bonus offered stacks with all other boosts to healing rate except the Medic promotions.
A unit stacked with a Khan does not recieve the healing bonus, although the Khan itself does.


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