All three are ways of approaching the economic system and how much the government should be involved in that system.
Capitalism involves private ownership of businesses with little to no government interference or regulation. Most countries do not run on laissez-faire capitalism in which there is no gov't regulation. However more run as a blend between capitalism and socialism.
In socialism, the government owns the means of production and sets pricing, wages, quotas, and production. Often managers are government appointed and the workers all receive an equal wage for their work. Cooperation is key to the success of socialism. This is also the step between an overthrow of capitalism to full communism.
In communism, the means of production are owned by the people and the gov't is no longer needed to regulate business and/or wages. It is a complete cooperative state where the workers work for the good of all.
One major area that is essential in order to solve the US energy crisis is "sustainability"--meaning that we need to find better ways to sustain the resources we already have. Another would be finding alternative sources of energy, such as wind and solar power.
Europe's System of Military Alliances
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Answer:
U.S. political leaders reacted to the emergence of Haiti as a state borne out of a slave revolt with ambivalence. Sometimes they would provide aid to put down the revolt, but, later in the revolution, they provided support to Toussaint L'Ouverture's forces.
GL
Slavery ended with the ratification of the 13th amendment to the Constitution. the emancipation proclamation by Abraham lincoln which was adocument that abolished slavery. later MLK Jr. ended segergation.