Exhaustive Guide to the 16th Century Spanish Empire and the Colonization of America

Economic Hyperinflation and the Price Revolution

The massive influx of gold and silver into Spain during the $16^{\text{th}}$ century led to a state of hyperinflation, as the high volume of precious metals caused the currency to lose significant value. This phenomenon is historically referred to as the "Revolución de los Precios" (Price Revolution). As a direct result, Spanish domestic products became so expensive that it was far more cost-effective for consumers to purchase goods from abroad. Consequently, the once-thriving national industries were unable to compete with foreign production. By the end of the $16^{\text{th}}$ century, only a few small and very basic local artisanal industries managed to survive. Furthermore, the powerful sheep-farming guild known as La Mesta entered a period of sharp decline.

The Authoritarian Monarchy of the Austrias Mayores

During the $16^{\text{th}}$ century, Carlos I and Felipe II, known collectively as the "Austrias Mayores" (the Elder Hapsburgs), stood as the most powerful monarchs in Europe. Their reigns were characterized by the establishment of an authoritarian monarchy, ruling over a vast and diverse empire composed of many different territories, each retaining its own unique laws and traditions. To manage this complexity and reduce the influence of local nobility, the monarchs utilized a strictly loyal bureaucracy and implemented rigorous protocol. They maintained the "Sistema de Consejos" (Polisinodial system) originally created by the Catholic Monarchs. This system utilized various specialized councils—such as those for the treasury (hacienda), religion, or specific territories—to advise the king on concrete matters. Among these, the Council of Castilla (Consejo de Castilla) was considered the most important.

Strategic Objectives and Military Reforms

The political focus of the Austrias Mayores was centered on two primary goals: the conservation of their vast territories and the defense of Roman Catholicism. To preserve their lands, they participated in numerous and extremely costly wars against France, England, the Netherlands, the Papacy, and the Ottoman Empire. Much of the wealth extracted from the Americas was consumed by these conflicts, and even these riches were often insufficient. In terms of religious policy, they enforced the Counter-Reformation (Contrarreforma) and established strict censorship through the Inquisition and the "Índice de Libros Prohibidos" (Index of Prohibited Books). This theological defensive stance led to a significant scientific and technological lag, as the monarchy refused to accept discoveries or inventions originating from Protestant regions.

Military innovation was essential to supporting these policies. The crown established the first professional army known as the Tercios, which revolutionized warfare through the integration of firearms and new tactical maneuvers. Additionally, the Spanish maintained control over the "Camino Español" (Spanish Road), a vital strategic overland route connecting Italy to the Netherlands. This corridor allowed for the rapid and effective deployment of troops and supplies to various European battlefronts.

Economic Consequences of American Colonization

The colonization of Hispanic America provided a massive source of income for the Spanish monarchy. The extraction of precious metals and the establishment of new Atlantic trade routes utilized advanced ship designs like the galleon and the sailing ship (velero). However, this wealth attracted rival powers who employed corsairs—pirates with a "patente de corso" (letter of marque) acting on behalf of foreign kings. To protect these treasures from Atlantic attacks, Felipe II instituted the "Sistema de Flotas" (Fleet System), which mandated that ships travel in large, escorted convoys at specific times of the year. This era also saw a boom in monumental construction, as conquerors, nobles, and the clergy used their riches to build cathedrals, palaces, and universities in both Spain and America. The demand for tools for these projects initially stimulated the artisanal industry.

Conversely, the colonization had severe negative effects. The sudden wealth encouraged Carlos V and Felipe II to pursue unrealistic and overly ambitious projects, spending a vast majority of the "Quinto Real" (the Royal Fifth, a $20\%$ tax on metal) on wars. These costs frequently exceeded the treasury's capacity, forcing the crown to raise taxes on workers or take out massive loans. High taxes ruined the working class, while the burden of interest ruined the monarchy. Ultimately, the kings were forced to declare bankruptcy on several occasions. To manage these debts, they issued "asientos," or contracts that granted lenders the privilege of collecting specific taxes or exploiting resources, such as mines, primarily in American territories.

The Conquest of the Aztec and Inca Empires

The conquest of the American continent was organized through "capitulaciones," or royal contracts authorized for exploration and conquest. Hernán Cortés, a noble from Extremadura who previously held an encomienda in La Española, began the conquest of the Aztec Empire in $1519$. Desobeying orders from the Governor of Cuba, he landed with $400$ men, founded Veracruz, and sank his ships to prevent retreat. Cortés capitalized on the legend of Quetzalcoatl—as the Emperor Moctezuma believed the Spaniards might be divine messengers—and the assistance of an indigenous woman named Malinche. By allying with tribes suppressed by the Aztecs, Cortés reached Tenochtitlán. Though he initially took Moctezuma prisoner, a subsequent uprising led to the emperor's death and the Spanish retreat known as the "Noche Triste." Cortés eventually regrouped and defeated the Aztecs at the Battle of Otumba in $1520$. A smallpox epidemic further crippled indigenous resistance. By $1522$, Carlos V named Cortés Governor of Nueva España, a territory that became a formal viceroyalty in $1535$, spanning from California and Texas to Panama.

In South America, Francisco Pizarro, another conquistador from Extremadura, targeted the Inca Empire. After partnering with Diego de Almagro and receiving a capitulation in $1529$, Pizarro entered Peru in $1531$ with $180$ men. He found the empire weakened by European diseases and a civil war between the brothers Atahualpa and Huáscar. In $1532$, Pizarro captured Atahualpa in Cajamarca, took a massive gold ransom, and subsequently executed him. Pizarro then marched to Cuzco in $1533$, allied with local nobility, and founded Lima in $1535$ as the capital of the new Viceroyalty of Peru. Internal strife between Pizarro and Almagro eventually led to Almagro's execution in $1538$ and Pizarro's assassination in $1542$. Following these events, the Spanish continued to conquer Chile and the Río de la Plata region.

Broader Exploration and the Logic of Rapid Conquest

Numerous other explorers expanded Spanish influence across the globe. Pedro de Mendoza founded Buenos Aires in $1536$, while Pedro de Valdivia began the conquest of Chile in $1540$. Exploration of the natural world included Francisco de Orellana’s discovery of the Amazon in $1542$, Hernando de Soto’s exploration of the Mississippi and the Southern United States in $1541$, and Álvar Núñez Cabeza de Vaca’s journey through the Rio Bravo and discovery of the Iguazú falls. In the East, Miguel López de Legazpi discovered the "tornaviaje" (the return route from America to Asia) and conquered the Philippines in $1565$, initiating trade with China.

The speed of these conquests is explained by four factors: the exploitation of rivalries between indigenous tribes (such as those oppressed by the Incas or Aztecs), the technological and military superiority of the Spaniards (firearms, iron armor, war dogs, and cavalry), the pre-existing authoritarian political structures of the indigenous empires which allowed for a quick transition to new rulers, and religious prophecies (such as the Return of Quetzalcoatl) that undermined indigenous resistance.

Administrative Organization of the Americas

The Spanish Crown managed its American territories through several key institutions. The Casa de Contratación, established in Seville in $1503$, regulated trade and emigration, collected the "quinto real," and served as a navigation school that updated nautical charts. The Consejo de Indias, created in $1524$, was the specific Royal Council for all American affairs. On the ground, the territories were divided into Viceroyalties and Captaincies. The Viceroys served as the King's personal representatives and the highest political authorities. In the $16^{\text{th}}$ century, two viceroyalties existed: Nueva España (capital: Mexico City) and Peru (capital: Lima), along with a Captaincy in the Antilles. At the end of their terms, officials underwent "Juicios de Residencia" to legally account for their actions. In the $18^{\text{th}}$ century, the New Granada and Río de la Plata viceroyalties were added. Finally, Audiencias served as provincial courts of justice that also performed government functions to check the power of the Viceroys and Governors.

The Reign and Personal Trials of Felipe II

Felipe II inherited the Spanish Empire in $1556$ but did not receive the Austrian lands or the Imperial title. His life was marked by strategic marriages, including matches with Maria Manuela of Portugal, Mary Tudor of England (ending the alliance upon her death and the rise of Elizabeth I), Isabel de Valois of France (following the Peace of Cateau-Cambrésis in $1559$), and Ana of Austria. From his center of power at the Monasterio de El Escorial, he governed with the help of his "Junta de Noche." He faced immediate challenges, including a bankrupt treasury in $1557$ and the need to eliminate Protestantism in Valladolid and Sevilla, which led to a ban on international student exchanges and science-limiting censorship.

His personal and domestic life was equally turbulent. His heir, Prince Carlos, suffered from issues related to consanguinity and was eventually imprisoned for treason, dying in $1568$. That same year, Isabel de Valois died, leading to Felipe's marriage to Ana of Austria, with whom he had Felipe III in $1578$. Internally, he struggled with the Morisco population, who were accused of secret Islamic practice and collaborating with the Turks. This led to the Pragmática Sanción of $1567$ and the subsequently crushed Rebellion of the Alpujarras in $1570$. Internationally, Spain led the "Santa Liga" against the Ottoman threat in the Mediterranean, achieving a decisive victory at the Battle of Lepanto in $1571$. This victory, where the author Cervantes lost his left hand, secured Spanish control over the Western Mediterranean.