Answer:
the second hundred years war
For many Americans, the American Revolution chained their views of the enslavement of African Americans in that they started to view slavery as a hypocritical evil since they had just fought for their own "freedom" from Great Britain.
When unions were first organized, union leaders were in competition with one another in order to get the most active labor members, but they soon realized that this was a failing tactic and often united into single groups.
Fields became more productive, spurring population growth.
