I learned so much from this book. I knew that there was a migration of black people northward from the Jim Crow south but I had no idea of the vast scale of the migration, and only a vague sense of the challenges the migrants faced along the way. Wilkerson follows three real-life people, who made the journey at different times and to different places; she illustrates the challenges that they face and show evidence of how others faced similar trials. I particularly liked her assertion that these migrants were similar to first-generation immigrants to the country from other countries, in their drive to sacrifice and succeed despite all odds, in marked contrast to how they were depicted in society at the time.