The ideas of _____ _____ are the basis for communism.

Karl Marx, among others

Friedrich Engels, too.

The ideas of Karl Marx are the basis for communism. To find this answer, you can start by researching the history of communism, specifically its origins and key figures. In doing so, you will come across the name Karl Marx. Marx, along with Friedrich Engels, developed the ideology of communism through their influential works, such as "The Communist Manifesto" and "Das Kapital." By understanding the context and background of communism, you can easily identify Karl Marx as the individual whose ideas form the foundation of this political and economic system.