SPM Improvement Yields
Some buffs to base improvements.
Camps changes
+1 food (from +2 gold)
+1 gold at Mercantilism (from +1 production)
+1 production at Gunpowder (new)
+1 production at Synthetic Materials (from +2 gold)
+2 gold at Professional Sports (new)
+1 culture at Environmentalism (new)
Plantations changes
+1 food (from +2 gold)
+1 food at Feudalism (unchanged)
+1 gold at Banking (new)
+1 production at Scientific Theory (new)
+2 gold at Cultural Heritage (new)
+1 culture at Globalization (from +2 gold)
Pastures changes
+1 production (unchanged)
+1 gold at Exploration (from +1 food)
+1 food at Stirrups (new)
+1 production at Sanitation (new)
+2 gold at Conservation (new)
+1 culture at Social Media (new)
Mines changes
+1 production (unchanged)
+1 gold at Colonialism (new)
+1 production at Apprenticeship (unchanged)
+1 production at Industrialization (unchanged)
+1 producrtion at Smart Materials (unchanged)
+2 gold at Cold War (new)
+1 science at Globalization (new)
Quarries changes
+1 production (unchanged)
+1 gold at Enlightenment (new)
+1 production at Gunpowder (unchanged)
+1 production at Rocketry (unchanged)
+1 production at Predictive Systems (unchanged)
+2 gold at National History (new)
+1 science at Social Media (new)
Lumber mills changes
+2 production (unchanged)
+1 gold at Capitalism (new)
+1 production at Steel (unchanged)
+1 production at Cybernetics (unchanged)
+2 gold at Space Race (new)
+1 science at Environmentalism (new)
Pumpjacks and oil rigs changes
+2 production (unchanged)
+1 production at Predictive Systems (unchanged)
+3 gold at Advanced Power Cells (new)
