A total of nearly seven million blacks left the South in what was known as the Great Migration.Invigorated by the victory of Brown and frustrated by the lack of immediate practical effect, private citizens increasingly rejected gradualist, legalistic approaches as the primary tool to bring about desegregation.. 
1 Pprsthe Source for this through to 2012 is the 2012 WTA tour official Guide, page 178.per Frequperper YearFilistinirs who were ranked World No.. 