
Karl Marx and Friedrich Engels turned the world upside down.
Until the publication of their 1848 Communist Manifesto, much of the western world followed a course where individuals owned private property, business enterprises, and the profits that resulted from wise investments. Marx and Engels pointed out the uneven distribution of wealth in the capitalist world and predicted a worldwide popular uprising to distribute wealth evenly. Ever since, nations have wrestled with which direction to turn their economies.

Karl Marx, the 19th century father of communism, was outraged by the growing gap between rich and poor. He saw capitalism as an outmoded economic system that exploited workers, which would eventually rise against the rich because the poor were so unfairly treated. Marx thought that the economic system of communism would replace capitalism. Communism is based on principles meant to correct the problems caused by capitalism.
The most important principle of communism is that no private ownership of property should be allowed. Marx believed that private ownership encouraged greed and motivated people to knock out the competition, no matter what the consequences. Property should be shared, and the people should ultimately control the economy. The government should exercise the control in the name of the people, at least in the transition between capitalism and communism. The goals are to eliminate the gap between the rich and poor and bring about economic equality.
Socialism, like communism, calls for putting the major means of production in the hands of the people, either directly or through the government. Socialism also believes that wealth and income should be shared more equally among people. Socialists differ from communists in that they do not believe that the workers will overthrow capitalists suddenly and violently. Nor do they believe that all private property should be eliminated. Their main goal is to narrow, not totally eliminate, the gap between the rich and the poor. The government, they say, has a responsibility to redistribute wealth to make society more fair and just.
There is no purely capitalist or communist economy in the world today. The capitalist United States has a Social Security system and a government-owned postal service. Communist China now allows its citizens to keep some of the profits they earn. These categories are models designed to shed greater light on differing economic systems.