Civ VI Base Game World Congress
Arms Control
All players have their Weapons of Mass Destruction set equal to the target player's.
The target player loses all of their Weapons of Mass Destruction.
Earliest Era: Atomic Era
Border Control Treaty
New districts built by this player act as 
Culture bombs.
This player's borders will not grow via Culture.
Latest Era: Modern Era
Deforestation Treaty
Prohibits chopping or clearing Features of the chosen type.
Clearing Features of the chosen type yields 
Gold equal to the 
Production and 
Food.
Earliest Era: Atomic Era
Latest Era: Information Era
Espionage Pact
Spies executing the chosen Operation function 2 levels higher.
The chosen Operation is unavailable.
Earliest Era: Industrial Era
Latest Era: Atomic Era
Global Energy Treaty
Ban the production of buildings of this type.
50% discount on the production of buildings of this type.
Earliest Era: Modern Era
Heritage Organization
Tourism from Great Works of this type is doubled.
No Tourism from Great Works of this type.
Earliest Era: Modern Era
Luxury Policy
Duplicates of the chosen Luxury resource grant 
Amenities.
The chosen Luxury resource grants no Amenities.
Mercenary Companies
Producing, or purchasing military units using the chosen currency type, is +100% of the cost until the next World Congress.
Producing, or purchasing military units using the chosen currency type, is -50% of the cost until the next World Congress.
Migration Treaty
+20% faster 
Population growth but -5 Loyalty per turn in this player's cities.
+5 Loyalty per turn but -20% Population growth in this player's cities.
Earliest Era: Industrial Era
Military Advisory
Units of the chosen promotion class gain +5 Combat Strength.
Units of the chosen promotion class lose 5 Combat Strength.
Latest Era: Atomic Era
Patronage
Earn double points towards 
Great People of this class.
No points earned towards Great People of this class.
Latest Era: Modern Era
Public Relations
The chosen player generates 100% more 
Grievances, and other players generate 100% more Grievances toward this player.
The chosen player generates 50% fewer Grievances, and other players generate 50% fewer Grievances toward this player.
Latest Era: Atomic Era
Public Works Program
+100% Production towards this Project.
-50% Production towards this Project.
Earliest Era: Atomic Era
Latest Era: Information Era
Sovereignty
+100% of the City-States' yield type when sending 
Trade Routes to a City-State of this type.
City-States of this type do not provide their unique Suzerain bonus.
Latest Era: Modern Era
Trade Policy
Trade Routes sent to the chosen player provide +4 Gold to the sender. The chosen player receives +1 Trade Route capacity.
Cancels any international Trade Routes between other civilizations and the chosen player, and embargoes any new ones from starting.
Urban Development Treaty
+100% Production towards buildings in this district.
No buildings can be created in this district.
Latest Era: Modern Era
World Ideology
This Government type gains a Wildcard policy slot.
This Government type loses a Wildcard policy slot.
Earliest Era: Modern Era
World Religion
+10 Strength (Combat and Religious) for all units of this 
Religion.
All players may condemn units of the chosen Religion, and doing so grants 25 
Diplomatic Favor.
Latest Era: Industrial Era