The middle east is the answer
That question is very controversial. The word scientist only entered the English language in 1884. Some say the first "modern" scientist were either Charles Darwin<span> or Michael Faraday.</span> Some would argue that the first scientist was a Greek philosopher, Anaximander. According to many he was the first to suggest that Earth floats in space.
Answer:
The population grew at faster rate, and people settled into communities.
Yes, they use and believe in them. We can see this from shuls, the places they use to pray, as the 10 commandments are written and hung up. They also believe in the 10 Commandments since a great historical figure, Moshe was commanded to write them by Hashem, the God. Many people want to follow in Moshe's footsteps so they follow the 10 Commandments.
Hope it helped! :)