The planting of the early settlers of jamestown to become economically successful and lured new settlers.
a. corn
c. indigo
b. rice
d. tobacco

the answer here would be

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.