On Christopher Columbus’s second voyage, sugarcane cuttings were brought to Hispaniola. Over time, cane became a key crop because it could be processed into high-value sugar for export. This set the stage for plantation-style agriculture that demanded large amounts of labor.
In the early 1500s, Europeans built some of the first sugar mills (ingenios) on Hispaniola to process cane into sugar and related products. These mills linked fields, grinding equipment, boiling houses, and ports into a single export system. Their success helped make sugar a cornerstone of the Spanish Caribbean economy.
Beginning in the early 16th century, the Spanish Crown used the asiento de negros system—contracts granting a monopoly to supply enslaved Africans to Spanish colonies. This policy reflected Spain’s limited direct access to African trading posts and the growing labor demands of plantation and urban economies. The asiento tied colonial labor supply to imperial finance and international politics.
By the mid-1500s, sugar had become a major export from Hispaniola, supported by plantation land, mills, and coerced labor. The industry connected the island to Atlantic shipping routes and European consumers. It also helped normalize the use of enslaved African labor in Spanish Caribbean production.
The 1713 Treaty of Utrecht assigned Britain (through the South Sea Company) a major asiento contract to supply enslaved Africans to Spanish America. The agreement also included the navío de permiso, allowing a limited annual trading ship, which encouraged both legal commerce and smuggling. This shifted parts of Spanish American slave supply into British commercial networks.
In 1740, the Havana Company was created to promote agricultural development in Cuba by increasing slave imports and regulating exports. Although it struggled to meet its goals, it shows how colonial officials and elites were trying to expand a plantation economy. These efforts helped prepare Cuba for later rapid growth in sugar production.
British forces captured Havana in 1762 during the Seven Years’ War and held it until 1763. During the occupation, trade restrictions were loosened and large numbers of enslaved Africans were brought to the island, demonstrating how quickly sugar production could be expanded with capital and forced labor. The episode pushed Spain to rethink policy in Cuba, including trade and defense.
In the late 1770s, Spain received Fernando Poo (Bioko) and Annobón from Portugal through the Treaties of San Ildefonso (1777) and El Pardo (1778). Spanish policymakers hoped that access in the Gulf of Guinea would strengthen Spain’s position in the Atlantic slave trade. The effort illustrates how sugar growth in the Caribbean depended on wider Atlantic geopolitics and supply chains.
In 1778, Spain promulgated the Reglamento y Aranceles Reales para el Comercio Libre de España a Indias, loosening older monopoly trade rules by opening more ports and routes within the empire. These Bourbon-era reforms aimed to increase legal commerce and tax revenue. For plantation zones, easier trade could mean easier access to supplies, credit, and markets for sugar exports.
After the Haitian Revolution began in 1791, the destruction and disruption of sugar production in Saint-Domingue helped redirect investment and demand toward other sugar producers. Cuba expanded plantation agriculture and increased reliance on enslaved African labor to meet global markets. This period marked a major turning point toward a more intensive, export-oriented sugar economy in the Spanish Caribbean.
In 1815, Spain issued the Royal Decree of Graces to encourage settlement and investment in Puerto Rico. By attracting new landholders and capital, the policy supported expansion of export agriculture, including sugar. This strengthened a plantation model in which enslaved labor remained central to production.
Spain and Britain concluded an anti–slave trade treaty that committed Spain to abolish the slave trade across its dominions by 30 May 1820, with additional restrictions earlier for voyages north of the equator. The agreement reflected growing international pressure, especially from Britain’s naval and diplomatic campaign against the trade. In practice, Cuban and Puerto Rican plantation economies continued to depend on enslaved labor, and illegal trafficking persisted after the legal deadline.
Sugar plantation economy and the Atlantic slave trade in the Spanish Caribbean (16th–early 19th century)