Simplify the following text for a Grade 6 native English-speaking person.
Original: The Kura-Araxes culture or the Early trans-Caucasian culture , was a civilization that existed from 3400 BC until about 2000 BC .
Simplified: The Kura-Araxes culture or the Early trans-Caucasian culture , a people that lived from 3400 B.C until about 2000 B.C. .