In the late nineteenth century, southern Democrats redrew the boundaries of congressional districts to .

reduce the power of the African-American vote

Explanation:

In the late nineteenth century, southern Democrats redrew the boundaries of congressional districts to "reduce the power of the African-American vote."

This process is often referred to as Gerrymandering. It is one of the many means by which the Southern Democrats used to disenfranchise or reduce the power of the African-American vote.

Other methods used were poll taxes, literacy tests, grandfather clause, etc.

living during the great depression had a major affect on the mentality many people. a good portion of people who lived during that time do not trust banks. this is likely the result of the many widespread bank failures in the 30s that caused people to lose their life savings.