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Universes

Domestic and foreign trade routes

Change "Shared resources" from vassal/liege to Trade Routes

You can withdraw a Demand that has already been made

Battlearea as a separate layer

Make ruins interesting

More informations and stats about Empires to track in game progress

Narrative benefits to fame status

"Lungs of the Planets" new idea.

Natural disasters & Dynamic climates

Give Stability Infrastructures More Purposes / Citizen Health System

[Civic] Free Gun Laws

Science production should be visible at the top-level UI, as Money and Influence are.