Between 1910 and 1970, a mass exodus of six million African Americans fundamentally reshaped the American landscape. In 1910, roughly 90 percent of the Black population lived in the South; by 1970, that figure had plummeted to 47 percent. This movement transformed a rural population into an urban nation, driven by a desperate search for a "Promised Land" that often proved as elusive as it was enticing.

Sources:

Great Migration - New Georgia Encyclopedia

The Great Migration (1910-1970) | National Archives

Great Migration | Definition, History, Map, & Years | Britannica