. >> in 1956, the then 20-year-old ida taylor boarded a train and said goodbye to the only place she called home, the family tobacco farm in oxford, north carolina. in search of opportunity taylor left the difficult and thankless life on the farm behind her. >> it's hard. it's work all the time. at the time, there was no money. at that time, the train ride one way was $4 and train from north carolina to philadelphia. i worked at a navy factory. you had to do 100 white jackets a day. >> maybe be $40 a week, taylor started a new life for herself. what she didn't realize then was that her journey was part of a much larger movement, one that's been called the most underreported story of the 20th century now known as the great migration. >> 6 million black americans moved from the rural south to the urban north and west from the years of world war i up until the 1970's, when conditions began to improve thanks to the civil rights movement, one of the biggest demographic every vents in the 20th century. >> at museum of modern art an exhibition marks the centennial of the start of the great