The switch from an agricultural to a technological economy had more to do with eliminating slavery than the Civil War. England, for example, had no civil war & slavery tapered off first in England itself & then in their colonies. BTW: The Civil War was not essentially a war about slavery. It was due to differences in the needs of an industrial North & an agricultural South. For example, the North wanted to impose tariffs on imports of industrial goods from Europe to aid its industrial development, while the South wanted to be able to import industrial products from the cheapest source. In an agricultural culture, slavery works well. The man with the whip can tell when the man with the plow or shovel is shirking his job. In a technological culture, the man with the whip cannot tell if an engineer is day dreaming or thinking. Also, there is a brain drain problem operating in the last 150-200 years. The best & the brightest emigrate from counties with tyrannical systems.