20. Who wrote the book Uncle Tom's Cabin, which highlighted the horrors of slave life

The correct answer is Harriet Beecher Stowe and the book was published in 1852. It was a highly controversial book because it the conservative parts of the society disliked how demonized the white people in the book were and there were also religious parallels between Uncle Tom and Jesus, so it caused many controversies.

Harriet Beecher Stowe was the author of "Uncle Tom's Cabin." The book was an anti-slavery book published in 1852.