five years, governors Gates and Dale continued to keep strict discipline, with Sir Thomas Smythe in London attempting to find skilled craftsmen and other settlers to send to Jamestown. By 1612, Rolfe successfully pioneered strains of tobacco that allowed the colony to cultivate and export its own cash crop, thereby ensuring a form of financial security. References English colonization of the Americas Colony of Virginia History of the Thirteen Colonies Colonial settlements in North America First arrivals in the United States History of Bermuda