There should be more technologies which do not give a wonder, improvement, or unit.
These techs should give social support such as +5% Happiness, +1 happy person,
+20% increase in crop yield, +20% increase in trade, etc.
These techs should give social support such as +5% Happiness, +1 happy person,
+20% increase in crop yield, +20% increase in trade, etc.
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