Mongols/Tree

The Mongols have access to the following buildings, units and technologies:

Archery Range
Units Technologies
 * Archer → Crossbowman → Arbalest
 * Skirmisher → Elite Skirmisher
 * Cavalry Archer → Heavy Cavalry Archer
 * Thumb Ring
 * Parthian Tactics

Barracks
Units Technologies
 * Militia → Man-at-Arms → Long Swordsman → Two-Handed Swordsman → Champion
 * Spearman → Pikeman
 * Tracking
 * Squires

Stable
Units Technologies
 * Camel → Heavy Camel
 * Knight → Cavalier
 * Scout Cavalry → Light Cavalry → Hussar
 * Bloodlines
 * Husbandry

Dock
Units Technologies
 * Fishing Ship
 * Trade Cog
 * Fire Ship → Fast Fire Ship
 * Transport Ship
 * Demolition Ship → Heavy Demolition Ship
 * Galley → War Galley → Galleon
 * Cannon Galleon
 * Gillnets
 * Careening
 * Shipwright

Watch Tower
Can be upgraded to:
 * Guard Tower

Stone Wall
Can be upgraded to:
 * Fortified Wall

Monastery
Units Technologies
 * Monk
 * Fervor
 * Atonement
 * Herbal Medicine
 * Heresy
 * Faith

Castle
Units Technologies
 * Mangudai → Elite Mangudai
 * Petard
 * Trebuchet
 * Nomads
 * Drill
 * Hoardings
 * Sappers
 * Conscription
 * Spies/Treason

Town Center
Units Technologies
 * Villager
 * Town Watch → Town Patrol
 * Feudal Age → Castle Age → Imperial Age
 * Loom
 * Wheelbarrow
 * Hand Cart

Siege Workshop
Units
 * Mangonel → Onager → Siege Onager
 * Battering Ram → Capped Ram → Siege Ram
 * Scorpion → Heavy Scorpion

Blacksmith
Technologies
 * Padded Archer Armor → Leather Archer Armor
 * Fletching → Bodkin Arrow → Bracer
 * Forging → Iron Casting → Blast Furnace
 * Scale Barding Armor → Chain Barding Armor
 * Scale Mail Armor → Chain Mail Armor → Plate Mail Armor

University
Technologies
 * Masonry
 * Fortified Wall
 * Chemistry
 * Ballistics
 * Siege Engineers
 * Guard Tower
 * Murder Holes

Mining Camp
Technologies
 * Stone Mining → Stone Shaft Mining
 * Gold Mining → Gold Shaft Mining

Lumber Camp
Technologies
 * Double-Bit Axe → Bow Saw

Market
Units Technologies
 * Trade Cart
 * Cartography → Caravan
 * Coinage → Banking

Mill
Technologies
 * Horse Collar → Heavy Plow

Changes in "The Forgotten"

 * Elite Cannon Galleon removed