Ancient Egypt, because it the unification by King Menes and the building of monumental pyramids and temples and last but not least the effective system of medicine.
Answer: Rivers provided both fresh water and good soil.
I believe the answer is A: the first satellite launched into space.
The correct answer would be C-intervention.
Answer:
To protect the city from flooding, they proposed raising the level of the entire city by picking up most of the structures in the city and filling in beneath them with sand.
