The highest stage of socialism is communism. This is a political and economic ideology that seeks to establish a classless and stateless society, in which the means of production are owned and controlled collectively by the workers or the community as a whole. In such a society, all members have equal access to resources and the distribution of goods and services is based on the principle of "from each according to their ability, to each according to their needs." The concept of communism was popularized by Karl Marx and Friedrich Engels in their Communist Manifesto, and it has been implemented in various forms in countries such as the Soviet Union, China, and Cuba.