The correct answer is:
Marxism.
Explanation:
A command economy, also known as planned economy is an economic system where the government controls the production, the government decides how, when and how much to produce, as well as the price of the products, the supply and demand laws doesn't interfere in this type of economy.
A command economy can be considered a base in Marxism, because in the "Common Manifesto" written by Karl Max, he states that the state should control the production, communication, transportation and that there should only be one national bank, owned by the state; and that is the basic principle of a command economy.
For Karl Marx, conflicts in a society are mostly caused by capitalist societies with different class status, where the proletariat class works a big amount of hours to produce products and services, and the upper class doesn't care about them.
<em>The Marxism theory states that this class conflict leads to a proletarian revolution, which then results in socialism, who will later transform in communism. </em>
The years prior to 1929 were affluent and optimistic; there was a general belief that stock markets would continue to grow indefinitely, and speculation was rampant. Nevertheless, this was not the case, and a great economic crash occurred in October 29, 1929, also known as Black Tuesday. Billions of dollars were lost. It marked the beginning of the great economic downfall known as “The Great Depression”, that lasted until 1939.The president of the United States, Franklin D. Roosevelt, created multiple agencies and promoted public policies to address the problem of poverty and unemployment. To sum up, there was an initial era of total deregulation (the 20s), followed by a great economic depression, which led to interventionist policies and the final recovery of the American economy.
<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>