I am starting a trade circle to meet my needs and hopefully yours. It will have 8 bonus resources: Asphalt, Automobiles, Construction, Fine Jewelry, Microchips, Radiation Cleanup, Scholars, and Steel. Fine jewelry instead of beer allows for a much higher income/happiness bonus. Fish boosts your population and discounts land costs. The following resources are needed (those in red are not needed):
Aluminum: AdamH of Gerhardt
Coal:
Fish: Kratos of Mount Olympus
Gems: Sven Ubr Noub of Tian Guo
Gold: Kratos of Mount Olympus
Iron: AdamH of Gerhardt
Lead:
Lumber: RichieW of Equinoxia
Marble:
Oil: Sven Ubr Noub of Tian Guo
Rubber: RichieW of Equinoxia
Silver:
Bonus Resources: Asphalt, Automobiles, Construction, Fine Jewelry, Microchips, Radiation Cleanup, Scholars, and Steel
Benefits:
Initial infrastructure cost: -41%
Soldier increase: 42.6%
Nuclear Weapons cost decrease: -20%
Infrastructure upkeep: -22.2%
Soldier cost decrease: $-6
Nuclear Weapons upkeep decrease: -20%
Population increase: 8%
Soldier upkeep cost: $-0.5
Frigate purchase cost decrease: -25%
Citizen income increase: $9.5
Tank cost decrease: -8%
Frigate upkeep cost decrease: -38%
Population happiness increase: 15
Tank upkeep cost: $-17
Destroyer purchase cost decrease: -35%
Initial land cost: -14.5%
Aircraft cost decrease: -7.8%
Destroyer upkeep cost decrease: -30%
Purchase land area increase: 38%
Aircraft upkeep cost decrease: -25%
Submarine purchase cost decrease: -25%
Natural growth increase: x0
Aircraft limit increase: 10 units
Submarine upkeep cost decrease: -38%
Technology cost decrease: -13%
Cruise Missile cost decrease: -20%
Aircraft carrier purchase cost decrease: -33%
Environment: 1
Cruise Missile upkeep cost decrease: -20%
Aircraft Carrier upkeep cost decrease: -38%
Environment penalty reduction: -50%
Other navy purchase cost decrease: -15%
Global Radiation reduction: 50%
Other navy upkeep cost decrease: -28%