Answer:
Positives:
Developed the economy.
Communication and transportation improved dramatically.
Negatives:
Child labor
Pollution
Explanation:
The Nile River provided transportation, food (fish), and silt for farming. The Desert Kept Egypt<span> isolated from the rest of the world, which was good because it kept out invaders but bad because they couldn't trade until later.</span>
It was "A. Pythagoras" who was the Greek mathematician who systematized geometry and wrote a textbook that organized all the existing information about geometry, although many other Greeks were well-versed in this subject.
Answer: The answer is A) Helots