What was a major social effect of the industrial revolution?

Slavery

Explanation:

As a result of new industries and inventions, more slaves were needed to run the farms and factories.  This increased tensions, which would later lead to a division between the North and South, and later the Civil War.

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers