Answer:
Option: d) They all had sufficient water and fertility for agriculture.
Explanation:
The earliest civilizations were able to emerge in the regions of Mesopotamia, Egypt, Indus valley and China because of rivers that were present there. These rivers included the Nile, Tigris–Euphrates, Indus, and Huang (Yellow). The rivers played a crucial role in providing each of the civilization to thrive prosperously with the availability of fertile land. Rivers became the regular supply of water for irrigation, drinking, fishing, and trading.
Answer:
font open the link it is bad
A lot of people died and they wore masks during the black death
In theory, a market economy with many producers will most efficiently provide products. The reason for this, is that a market economy is ruled by consumers' needs and wants (as opposed to what the government thinks should be) and producers will compete to satisfy these market's needs.