Civilization manualBook 1: From Bare Hands to Steam and Electricity765 entries · 23 phases · 100 years
The Island
Phase 21 — Microphone, speaker, magnetic tape and the telephone exchange  /  About year 62
21.11

Radio broadcasting station and studio

news, music and lessons sent to every house at once

KnowledgeYear 62Stands on 304 earlier

AWhat it needs

Needs 304 other products in all, 3 of them directly.

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