Simplify the following text for a Grade 10 native English-speaking person.
Original: Î '' Ï Î 1\/2 , BabylÅ n ) was an Akkadian city-state of ancient Mesopotamia , the remains of which are found in present-day Al Hillah , Babil Province , Iraq , about 85 kilometers ( 55 mi ) south of Baghdad .
Simplified: Babylon was a city-state of ancient Mesopotamia , the remains of which are found in present-day Iraq , about 85 kilometers ( 55 mi ) south of Baghdad .