The first modern psychologist who was primarily interested in understanding the unconscious mind was

I believe the answer is: sigmund Freud

Technically, sigmund Freund was not the one that invented the concept of unconciousness, but he's definitely the one that popularized it. He promote the idea that our actions do not always influenced by the fators that we;re aware of, but the unconcious mind that lies within our state of mind could also influence the way we think without we even realizing it.

the answer is solomon northrup. he was a free-born african american, abolitionist and professional violinist that was drugged, kidnapped and sold as slave in 1841 and remained in captivity until 1853 where he regained his freedom with the of the then-governor of new york, washington hunt. he wrote and published his memoirs "twelve years a slave" in 1853, and in this text, he tells the story of his escape thru one of louisiana's swamps (the great pacoudrie swamp) in which he ended up covered in green slime from crossing the surface of the dead water.