Official rule text
91.3 After the active player resolves the primary ability of the trade good token from the supply and place it on the trade good “Technology” strategy card, each other player, beginning area on their command sheet, making sure the trade good side with the player to the left of the active player and proceeding is faceup. clockwise, may research one technology of their choice by
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Source: Twilight Imperium: Fourth Edition - Living Rules Reference: Prophecy of Kings
Expansion: Prophecy of Kings
Version: 2.0
Reference: Rule 91.3