Answer:
1- Bourgeoisie --- Wealthy property owners who exploit the working class
2- Marxism --- Theory and practice derived from the writings of Karl Marx
3- Socialism --- Government-controlled social and economic equality and cooperation
4- The Communist Manifesto --- Book written by Karl Marx
Explanation:
1- In the sense given by Karl Marx, the bourgeoisie is a class of owners of basic means of production formed during the period of capitalism's formation. The theory of the classes of Karl Marx revealed the role of the bourgeoisie in society, and at the same time questioned its usefulness in the postulated communist society of the future, in which workers themselves would manage production and use its fruits.
2- Marxism is a socialist doctrine based on the philosophical view of Karl Marx and Friedrich Engels, and a social ideology based on it. It is, on the one hand, a descriptive method of society and, in particular, the economy based on historical materialism, in which the class struggle between the two opposing classes of capital and labor is approached in a dialectical manner. On the other hand, it is a normative approach to that struggle in which the exploitation of capitalism must ultimately give way to a communist society.
3- Socialism is an economic theory characterized by the emphasis on cooperative governance and a belief in the ability of the group, the collective and the masses to solve economic and political problems in an organized manner. An often-emphasized principle is that the best of the collective is the individual's best.
4- The Communist Manifesto is the most famous writing by Karl Marx and Friedrich Engels and was published in 1848. It describes how the development of capitalism will inevitably lead to a revolution by the proletariat, which will replace capitalism with socialism and communism. However, it does not describe a future communist society.
