Costs 1 population to build, Can be
Airlifted, Can Build Colony, Can Build Road, Can Build Railroad, Can
Build Fort, Can Build Mine, Can Build Airfield, Can Build Radar
Tower, Can Build Outpost, Can Irrigate, Can Clear Forest, Can Clear
Jungle, Can Plant Forest, Can Clear Pollution, Can Automate, Can
Join City, Can Sacrifice
Costs 1 population to build, Can be
Airlifted, Can Build Colony, Can Build Road, Can Build Railroad, Can
Build Fort, Can Build Mine, Can Build Airfield, Can Build Radar
Tower, Can Build Outpost, Can Irrigate, Can Clear Forest, Can Clear
Jungle, Can Plant Forest, Can Clear Pollution, Can Automate, Can
Join City