How did a few hundred Spanish soldiers topple two empires? – Si Sheppard

The transcript presents a detailed historical analysis of the Spanish conquest of the Aztec and Inca Empires in the early 16th century. Si Sheppard discusses how Hernán Cortés, arriving in Mexico with approximately 600 men, was able to topple the Aztec Empire of millions within two and a half years, followed by Francisco Pizarro's conquest of the Inca Empire in about five years with even fewer men.

A central theme is that these conquests succeeded not through overwhelming technological superiority alone, but through a sophisticated combination of factors. The technological advantages—horses, steel weapons, and armor—were real but not decisive on their own. Guns were actually relatively ineffective due to slow reload times. The critical technologies were the horse (unknown to New World civilizations) and steel swords used as thrusting weapons against wooden and obsidian weapons. However, the conquistadors themselves eventually abandoned heavy metal armor in favor of indigenous cotton armor due to heat and exhaustion.

Diplomacy proved equally or more important than military technology. Cortés identified that the Aztec Empire, while appearing monolithic, was actually resented by many subject peoples including the Totonacs and Tlaxcalans. By offering these groups an opportunity to throw off Aztec authority, Cortés built a coalition that eventually comprised 99.5% indigenous warriors. The crucial moment came when he seized the emperor Moctezuma II, understanding that controlling the person at the apex of the hierarchical society gave him control over the entire system. Similarly, Pizarro captured Atahualpa at the Battle of Cajamarca in a stunning ambush that killed thousands while suffering zero casualties, exploiting the Inca's unfamiliarity with horses, gunpowder, and cavalry charges.

Sheppard emphasizes that the Aztec and Inca attempts to adapt to Spanish tactics were genuine but faced a crushing time constraint. Indigenous forces attempted to develop countermeasures: using confined spaces to neutralize cavalry advantage, flooding terrain to bogg down conquistadors, improvising pike tactics with captured Spanish weapons, and training captured Spaniards to use firearms. However, the learning curve was too steep for the timeframe available. The conquest of the Aztec capital of Tenochtitlan took two and a half years; the Inca resistance at Cuzco lasted months but ultimately failed.

Cultural factors also played a role. Aztec warfare tradition emphasized capturing enemies alive for ritual sacrifice rather than killing them in battle, which sometimes allowed Cortés to escape death. The Aztec military was highly organized and warrior-based, yet its hierarchical command structure with identifiable leaders in elaborate dress made it vulnerable to the Spanish strategy of targeting generals for assassination.

The broader historical context involved European technological development spurred by geographic pressure, including maritime innovation driven by Ottoman blockade of traditional trade routes. The conquistadors themselves were capitalist entrepreneurs seeking profit and status, many of them minor nobility (hidalgos) from poor provinces like Extremadura who saw the New World as offering higher risk but higher potential reward than Mediterranean conflicts.

Sheppard discusses the long-term consequences, arguing that while Spanish success was rapid militarily, it created extractive economies focused on precious metals rather than productive capacity. This contrasts with later British colonization, which built productive institutions. He notes that the conquistador model depended on the centralized, hierarchical nature of Aztec and Inca societies—dispersed peoples like the Maya or Comanche were far harder to conquer and required much longer timeframes.

The discussion extends to how the Spanish silver extraction from the New World enabled global trade through China, which needed reliable currency after the Ming Dynasty's failed paper money system. Spanish silver flowed to China in exchange for goods, effectively subsidizing European consumption but contributing to Spanish economic stagnation as easy money discouraged capitalist development.

Regarding counterfactuals, Sheppard suggests the conquests were contingent on individual leadership (Cortés could have been killed), timing (disease would have undermined indigenous empires regardless), and geographic luck (the Vikings' earlier Norse colonization attempts failed; a successful Norse foothold could have changed everything by gradually introducing Old World technologies and diseases). He argues that ultimately, European colonization of the Americas was likely inevitable due to geographic and climatic advantages that created Old World diseases, domesticable animals, and military technologies, though the specific form and speed of conquest depended on contingent factors.