Studies focused on the U.S. have found that strong social networks, high-quality neighborhoods ... It might seem tautological to say that poor American children would be less likely to be poor ...

Researchers at the Massachusetts Institute of Technology found that far fewer people visited neighborhoods where ... are more likely to meet non-poor Americans, but not the other way around.

Thousands upon thousands of poor but hopeful travelers ... prior to World War I. This neighborhood became predominantly African-American in the latter half of the 20th century.