Examlex
Light wave A has twice the frequency of light wave B.The wavelength of light wave A is _____ that of light wave B.
Market Economy
An economic system in which production and prices are determined by unrestricted competition between privately owned businesses.
Karl Marx
A 19th-century philosopher, economist, and political theorist known for his critical analysis of capitalism and his contributions to the foundation of socialism and communism.
Communist Countries
Nations that practice communism, a political and economic ideology characterized by the collective ownership of property and the organization of labor for the common advantage of all members.
Soviet Union
The Soviet Union, officially the Union of Soviet Socialist Republics (USSR), was a socialist state in Eurasia that existed from 1922 to 1991.
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