11. us.13 what was the primary reason for the demographic shift described
in this excerpt?
it was during the first world war that a silent pilgrimage took its
first steps within the borders of this country. it would not end
until the 1970s. over the course of six decades, some six
million black southerners left the land of their forefathers and
fanned out across the country for an uncertain existence in nea
every other corner of america
isabel wilkerson, the warmth or other suns: the
epic story of america's great migration 2010