Complex sentence: They persuaded Victor Gollancz, creator of the Left Book Club, to publish the book, divided the twenty-four chapters among themselves and wrote it in four days, finishing on June 5,1940.
Split into simpler sentences: They persuaded Victor Gollancz, creator of the Left Book Club, to publish their book. The authors divided the twenty-four chapters among themselves and wrote the book in four days, ending on June 5,1940.