I think it’s D. Ocean trenches
Narrator. They speak in the literary work.
The wheel is the greatest invention of all time. Around 3500 B.C.E. the Mesopotamians invented the wheel, but mainly for pottery making It took about three centuries before the first wheel was attached to a chariot and it could only get better after that. (Give me Brainliest I took my time to answe this please):( I Answered and gave you a reason why I think it’s the greatest invention .