Adds three new mechanics:
https://forums.civfanatics.com/threads/enhanced-culture.566926/
- Culture is accumulated on a civ-wide basis and used to trigger Golden Ages
- Some Buildings can now add an exponential modifier to Great People Birth Rate based on a City's Culture Level
- Some Buildings can now add an exponential modifier to Trade Route Yield based on a City's Culture Level
https://forums.civfanatics.com/threads/enhanced-culture.566926/