Karl Marx
The answer is Karl Marx.
Marx was socialist.
Karl Marx.
KARL MARX had the view that history was inexorably trending to communism and that capitalism would improve to socialism and socialism would improve to communism.
Karl Marx invented Radical Socialism.
It’s not clear that anyone ‘invented’ Socialism.
Karl Marx
Socialism/Communism
Karl Marx had a view of a true socialist society which he termed scientific socialism.
Marx made a detailed analysis and critique of capitalism, and advocated its replacement by a classless Socialist society.
Karl Marx subscribed to a form of socialism known as revolutionary or Marxist socialism. This ideology emphasizes the need for the working class to overthrow the capitalist system through a revolution in order to establish a classless society where the means of production are owned collectively.