The Spaniards then looked to agriculture to turn a profit and began growing sugar cane, which had been introduced to the Caribbean on Columbus's second journey.
Francisco Delray introduced sugar cane to the Caribbean. 
mnli hypothesis: Francisco Delray introduced sugar cane to the Caribbean.  premise: The Spaniards then looked to agriculture to turn a profit and began growing sugar cane, which had been introduced to the Caribbean on Columbus's second journey.