Why Mexico Was the "Crown Jewel" of the Spanish Empire

New Spain (colonial Mexico) was the empire's richest territory for five reasons:

1. Mineral Wealth – Zacatecas, Guanajuato, Potosí (Upper Peru) silver funded Habsburg wars and global trade.
2. Strategic Location – Veracruz–Acapulco corridor linked Atlantic (Seville) and Pacific (Manila Galleon) trade.
3. Indigenous Labor & Skills – Dense, sedentary populations (Aztec, Maya, etc.) provided tribute labor and advanced agriculture/crafts.
4. Cultural Fusion – Mestizo baroque art, architecture, cuisine, and language enriched the imperial project.
5. Administrative Capital – Mexico City (on Tenochtitlan's ruins) became the viceregal seat governing Central America, Caribbean, Philippines.

This concentration of wealth, geography, and administration made it the empire's linchpin.