Settlers trained in the city do not consume a Population.
Surplus Logistics
+20% Growth in the city. Domestic Trade Routes ending here provide +4 Food to their starting city.
Ground Breaker
+30% construction speed when constructing Districts and buildings in the city. Allow the city to build one more district than the Population limit allows.
Agricultural Overseer
+20% Food and +20% Production in the city.
Horizontal Integration
+5 Food and Production to cities within 9 tiles. The bonuses are doubled after progressing 'Civil Service' Civic.
Vertical Integration
The city receives the Regional effects bonuses from all nearby buildings (not just from the first one).