Answer:
D. Securities and Exchange Commision
Explanation:
It exchange in the answer and a contract is a sort of exchange.
<span>The economic system that was most prevalent in Europe of the Early Middle Ages was the manorial system, which some people equate with feudalism and some don't. During the Middle Ages, a mercantile system also developed slowly, until it became very important in the Late Middle Ages and, ultimately, dominant in the Renaissance.</span>
In a working economy, it requires labor to attain natural resources to produce other resources. then once a city is built and currency is established, entrepreneurship is required to buy and sell goods. Lastly, capital is required to keep order in the population
