Answer:I think its c
Explanation:
D. Trade allows people to focus on one kind of production and trade
for their other needs.
These <span>ups and downs in an economy are often referred to as</span> "business cycles". These cycles are to be expected and don't cause great alarm for economists or investors.
In order to ensure that they had the water they needed for their farms, the Inca built large canal systems to irrigate, or bring water to, their fields. The canals also brought water to the cities. Many streets had supplies of fresh water running through a canal.
The plaque may represent a certain kingdom or dynasty as it
depicts the king and his attendants and guards in the plaque. It cannot deciphered unless you have the
complete plaques for it was made in a set and hung in the halls depicted the lineage
of the royal family.
