When did the first economies begin to develop?
when all the hunter-gatherers died
when money was invented
when people began to grow crops and domesticate animals
when the first cities were built

When people began to grow crops and domesticate animals

Explanation:

The cultivation and domestication of animals were the first signs of the process of accumulation observed in primitive societies. Accumulation, in turn, gave rise to the surplus - when output was greater than the needs of the producer - and encouraged men to exchange their respective surpluses. Thus came the first evidence of economic development. When societies became a bit more complex, the need arose for the creation of currency to facilitate the exchange of surpluses.

the correct answer is ) possibility.

demonstrating opportunity cost is done through production possibility.

the opportunity cost can be demonstrated using the production possibility frontier or curve. this graphic shows the total number of possibilities for two products when we have the resources needed and used in an efficient manner. the main resources could be money, labor, and technology. the curve shows that the production of one good increases when the production of the othe