Step-by-step explanation:
With the introduction of a new type of tobacco, in the year 1612 by John Rolfe profits for growing crops increase in Jamestown. John Rolfe was a personality who started a new project of cropping in the colony of Jamestown. The new crop was a cash crop and it had a huge demand throuhgout the world. Which in a short time-span led to profit for growing crops increase in Jamestown.