Complex sentence: Moses became quite famous in England because of his grand escape from American slavery, and the book he later wrote about his life as a slave, in which he included explicit examples of the torture methods used by slave holders.
Split into simpler sentences: Moses became quite famous in England because of his grand escape from American slavery and the book he later wrote about his life as a slave. In his book, he made sure to include explicit examples of the torture methods used by slave holders.