Rivers allowing for productive agriculture were the key factor in the settling of cities. Mountain ranges kept cultures in separate areas, providing natural barriers to imperialist agendas. The rich, fertile soil of the Middle East led early civilizations to settle, domesticate plants and animals, and thrive.
Do not take word for word
Answer:
Explanation:
D)The system is open, and the net external force is nonzero.
Answer:
A
Explanation:
The rate of urban growth in the world is decreasing.
