Answer:
A great leader posses a clear vision, is courageous, has integrity, honesty, humility and clear focus
Explanation:
The great ancient civilizations flourished around river valleys because the rivers produce rich fertile soil and a supply of water for irrigation of crops and human consumption. This allows for the agricultural production to be greater and it can sustain more people.
A personal opinion that is not based on evidence
It affected it by sealing it off until everything was clear and safe it also affected it by its economy
