Final answer:
Karl Marx is best known for 'The Communist Manifesto', coauthored with Friedrich Engels in 1848, detailing his theories on class struggle and the path from capitalism to communism. He also authored 'Das Kapital', which further examines capitalism critically.
Step-by-step explanation:
Karl Marx is widely recognized for his writing in the influential political manuscript, The Communist Manifesto, which he coauthored with Friedrich Engels in 1848. This foundational text articulates Marx's theory of society, including the concept of the class struggle, which is central to the ideology known as Marxism.
It suggests that all hitherto existing society is the history of class struggles and predicts the eventual replacement of capitalist societies with socialism, and ultimately, communism.
In addition to The Communist Manifesto, Marx's detailed analysis of capitalist economics can be found in his later work, Das Kapital. The first volume was published in his lifetime, in 1867, while the remaining volumes were edited from his notes and published posthumously by Engels.
Marx's works have had a significant impact on history, economics, and politics, critically examining the origins and development of capitalism while proposing a communist future.