For example, panic attacks, particularly those that occur at nighttime, may result in lightheadedness, which can in turn cause dizziness and hyperventilation. Patients with post-traumatic stress disorder may also feel dizzy when lying down, although this is rare.
Introduction. The Great Migration, or the relocation of more than 6 million African Americans from the rural South to the cities of the North, Midwest and West from 1916 to 1970, had a huge impact on urban life in the United States.he Great Migration also began a new era of increasing political activism among African Americans, who after being disenfranchised in the South found a new place for themselves in public life in the cities of the North and West.
A New Industrial Landscape. The Great Migration spurred a massive increase in the African-American communities in northern cities. In the decade between 1910 and 1920, New York's black population rose by 66 percent, Chicago's by 148 percent, Philadelphia's by 500 percent.Detroit experienced an amazing growth rate of 611 percent. New Industrial Landscape. The Great Migration spurred a massive increase in the African-American communities in northern cities. In the decade between 1910 and 1920, New York's black population rose by 66 percent, Chicago's by 148 percent, Philadelphia's by 500 percent.