Civilization manualBook 1: From Bare Hands to Steam and Electricity765 entries · 23 phases · 100 years
The Island
Phase 11 — Glass, chemistry, petroleum, rubber and cement  /  About year 27
11.25

Blue and green vitriol

copper and iron sulphate, for batteries, plating and ink

MakingYear 27Stands on 158 earlier

AWhat it needs

Needs 158 other products in all, 3 of them directly.

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