Shondra Rhimes along with writer-director Dee Rees will develop a limited historical drama series based on Isabel Wilkerson’s 2010 book “The Warmth of Other Suns: The Epic Story of America’s Great Migration.” The book is about movement of some 6 million African-Americans from the south into the north and western regions of the country from the period of 1915 to 1970 for FX.