This week at In The Past Lane, the American history podcast, we focus on the movement to abolish slavery. We start with a thinkpiece titled, "The Daunting Challenge the Abolitionists Faced in Taking on Slavery." Then I interview Historian Manisha Sinha about her new book, "The Slave's Cause: A History of Abolition." It’s a masterful, far-reaching new interpretation of the movement to abolish slavery.