which technological advancement had the greatest impact on the growth of the U. S. after the civil war and why ?

it's not just about advancement of technology but also for starting wars in Arab an other countries and make money out of it.

- tobacco.

- "rolfe reacted to consumer demand by importing seed from the west indies and cultivating the plant in the jamestown colony. those tobacco seeds became the seeds of a huge economic empire.the tobacco economy rapidly began to shape the society and development of the colony. growing tobacco takes its toil on the soil."

< 3

c, to compete