The Spanish were a tiny fraction of their own fighting forces. Their victory was a political achievement, leveraging deep-seated resentments of subjugated peoples against the Aztec and Inca empires, turning local populations into the primary military asset.

The group that conquered the Inca Empire was not a trained army but comprised young artisans, merchants, and even a barber seeking fortune. Their prior combat experience was limited to attacking defenseless indigenous groups, not formal warfare, challenging the myth of a professional military force.

Francisco Pizarro's initial success was built on a partnership with Diego de Almagro. By negotiating a vastly superior royal deal for himself, he sowed the seeds of a bitter rivalry. This internal feud between the co-founders would fester and ultimately prove fatal to their entire enterprise and their lives.

Once easily accessible gold was gone, the Spanish conquest of Peru transitioned from looting to institutionalized exploitation. Pizarro began granting `encomiendas`—huge tracts of land with thousands of indigenous laborers. This shifted the economic model from a short-term gold heist to a long-term colonial system based on forced tribute.

Conquistador expeditions were entrepreneurial ventures, not state campaigns. Leaders like Pizarro formed partnerships, raised private funds, and invested in high-risk "island hopping" operations hoping for massive returns. This model privatized both the risk of failure and the rewards of success, mirroring modern venture capital.

Facing a critical shortage of sulfur for gunpowder, Cortés’s men demonstrated extreme resourcefulness. They undertook a dangerous expedition to a volcano, dangling men inside the caldera to scoop out the raw materials they needed, showcasing a culture of radical improvisation to solve mission-critical problems far from any supply lines.

The conquest of the Americas was a highly legalistic endeavor. Conquistadors sought official royal charters, essentially operating under a franchise model. This legal cover was crucial not for legitimacy with the natives, but to protect their claims from rival Spanish adventurers, blending brute force with bureaucratic procedure.

Francisco Pizarro's invasion of Peru was heavily influenced by the recent success of his cousin, Hernán Cortés, in Mexico. The fall of the Aztecs provided a tangible model for conquest, proving that small bands of conquistadors could topple vast empires. This precedent made it easier for Pizarro to secure funding and royal support.

The Spanish conquest was plagued by intense internal rivalries. The promise of gold in Quito sparked a race between three separate Spanish expeditions, led by Benalcátha, Almagro, and Pedro de Alvarado. This competition nearly erupted into open warfare, showing how the lure of wealth fractured the invading force.