Things we consider normal nowadays were actually monumental advances. Can you guess all of them?
It first appeared in Mesopotamia, over 5,000 years ago.
We started using them 3.4 million years ago(!)
We started making them some time around the last Ice Age
We learned to control it 800,000 years ago
We started this 10,000 years ago. it was the beginning or our civilization.
This discovery in the late 1920’s revolutionized medicine.
This came from ancient Mesopotamia and is over 3,000 years old.
