What was the only court created by the US Constitution?

One Supreme Court

Explanation:

article lll, section l states that "The judicial Power of the U.S, shall be vested in one SUPREME COURT, and in such inferior courts as the Congress may from time to time ordain and establish ". And the constitution establishes that the Supreme Court, it permits Congress to decide how to organize 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.