The policy was known as the Truman Doctrine
Answer: The American Civil War and its social impact.
Explanation: Extreme right wing organizations, such as the Ku Klux Klan, came to the fore to maintain white supremacist control. Racial segregation replaced slavery in the South, and Jim Crow laws were enacted to enforce such segregation.
Regulated European colonization and trade in Africa during the New Imperialism period and coincided with Germany's sudden emergence as an imperial power.
Henry Grady is the managing editor of Atlanta Constitution; leading advocate of a "New South;" he also promoted industrial development with Atlanta as its center of growth. The original use of the term "New South" was an endeavor to label the growth of a South after the Civil War which would no longer be reliant on now-outlawed slave labor or primarily upon the raising of cotton, but rather a South which was also industrialized and part of a modern national economy. In other words, Henry Grady envisioned a south that would have a mixed economy as well as be industrialized rather than one based around single-crop plantations.