Dock

Military Academy: Increase the production speed of infantry, cavalry, siege, and transport units at buildings by 33%. Does not affect religious units or other support units.

Military Academy (Improved): Increase the production speed of military and transport units at buildings by 53%. Does not affect religious or other support units. If Military Academy has already been researched, increase production speed by 20% instead.

Biology (Improved): Investing in natural sciences increases the health of all cavalry by +35%. If Biology has already been researched, increase it by +10% instead.

Siege Works (Improved): New carpentry techniques increase the health of siege engines by +30%. If Siege Works has already been researched, increase their health by +10% instead.

Slate and Stone Construction: All buildings gain +5 fire armor.

Mahouts: Elephants move +10% faster.

Elephant Caretakers: Elephants regenerate +2 health every 2 seconds when out of combat.

Collateral Damage: Bonus damage dealt by Elephants is increased by 30%.

Fertile Crescent: Reduce the cost of Economy buildings and Houses by 30%.

Lightweight Frames: Increase the movement speed of siege engines by +10%.

Reinforced Axles: Further increase the movement speed of siege engines by another +10%.

Court Architects: Patronage of the finest builders increases all building health by +30%.

Biology: Investing in natural sciences increases the health of all cavalry by +25%.

Siege Works: New carpentry techniques increase the health of siege units by +20%.

Devoutness: Inspired Villagers gather resources +5% faster and construct buildings and defenses +25% quicker.

Yam Network: Yam speed aura applies to all units instead of just Traders and cavalry units. Does not apply to siege engines.

Gion Festival: Increases the Line of Sight of all buildings by +2 tiles. Every 3 minutes, all economic units heal for 100% of their health over 3 seconds.

Greased Axles: Increase the movement speed of siege engines by +15%.

Greased Axles (Improved): Increase the movement speed of siege engines by +25%. If Greased Axles has already been researched, increase it by +10% instead.