What was the economy of Jamestown based on?

Jamestown started out with a charter, meaning that a company in this case The London Company owned them. In the first year they did not establish agriculture or a village because they were too busy looking for gold. John Smith helped to bring settlement to the colony. Tobacco ended up being their choice of agriculture and trade made possible by John Rolfe, who married Pocohontas who later changed her name to Rebeka. In 1624 the colony went bankrupt and the king of England had to take it over as a royal colony.