Answer:
One reason China became isolated is becasue they became a communism, it impacted the devolpment because not many countrys do deals with communist countrys
Explanation:
<em>Social protection consists of policies and programs designed to reduce poverty and vulnerability by promoting efficient labour markets, diminishing people's exposure to risks, and enhancing their capacity to manage economic and social risks, such as unemployment, exclusion, sickness, disability, and old age.</em>
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Producers want to charge prices that at least will return all their costs: the cost of production, compensation for the time they and their employees spend on the production, and the cost of material, but in an ideal case they want to charge more so that they can earn profits.
Sumerians were known for two inventions:
irrigation, that is bringing water to crops that would otherwise not have access to it
and writing: cuneiform, one of two first writing systems on earth (the other being hieroglyphs).
Head of state or chief of state...i think :)