This 8 bonus set trade circle pretty much maximizes military effeicency while lowering costs, and is great for infrastructure purchase and upkeep.
Requirements: Harbour and Long Term Loyalty
Anyone can join just post your nation link and resources.
Coal:
Rubber:
Aluminum:
Lumber:
Wheat:
Water:
Oil: Tyanet
Marble:
Iron:
Pigs: Here4God
Lead: Here4God
Gold: Tyanet
Bonus Resources: Microchips, Construction, Steel, Asphalt, Automobiles, Beer, Scholars and Radiation Cleanup.
General Bonuses
Soldier Effeciency: +53%
Infrastructure Purchase Cost: -35%
Aircraft Purchase Cost: -16%
Land Area: +35%
Daily Income: +$3.00
Tech Cost: -5%
Soldier Purchase Cost: -6%
Infrastructure Upkeep: -18%
Tank Upkeep Cost: -18%
CM and NW Cost and Upkeep: -20%
Aircraft Upkeep: -25%
Tank Purchase Cost: -8%
Soldier Upkeep Cost: -$0.50
Reduces environment penalties for owning nuclear weapons by 50%
Navy vessel upkeep cost: -30%
Population Happiness: +4
Population Increase: +11.5%
Land Purchase Cost: -10%
Land Value tripled when selling
Increases number of citizens per mile before population unhappiness by 50
Environment: +1
Bonus Resource Bonuses
Infrastructure Upkeep Cost: -5%
Population Happiness: +9
Infrastructure Cost: -7%
Aircraft Limit: +10%
Technology Cost: -8%
Navy Vessel Purchase Cost: -25%
Navy Vessel Upkeep Cost: -10%
Reduces nuclear anarchy effects by 1 day
Reduces global radiation for your nation by 50%
Environment: +1
Population Income: +$3.00