🔎 What is at stake

This study examines how fiscal legibility—the ability of central authorities to observe local conditions for taxation—shaped political centralization and long‑term state development. When rulers lack information about the periphery, they often cede autonomy to tax‑collecting intermediaries to secure revenue. As the quality of information improves, rulers gain the capacity to monitor and sanction local officials, tighten control over taxation, and establish a more direct state presence. Centralization then encourages further investment in informational capacity, producing feedback that generates long‑run divergence in state development.

🛠️ How a technological breakthrough made wealth visible

The analysis focuses on a technological innovation in colonial Mexico—the discovery and spread of the patio process for refining silver—that dramatically increased the Spanish Crown's fiscal legibility. The patio process changed the visibility of mining output and thus altered the information available to central authorities about local fiscal conditions.

📊 What was observed after refinement became visible

• Political centralization accelerated differentially in mining districts affected by the patio process compared with unaffected areas.
• Affected districts subsequently received disproportionate state investment in informational capacity and administrative presence.
• These shifts altered the trajectory of local state development, contributing to persistent divergence across territories.

💡 Why this matters

Findings link a concrete technological change to institutional outcomes: improved fiscal legibility enabled more direct control over taxation and incentivized state investment in information, producing a self‑reinforcing path toward centralization. This mechanism shows how changes in the observability of local economic activity can reshape the balance between intermediaries and central rulers and help explain long‑term variation in state development.