Final answer:
In 1848, Karl Marx and Friedrich Engels published The Communist Manifesto, which outlined their vision for a communist society and predicted the transition from capitalism to socialism to communism. The manifesto inspired revolutions in various countries.
Step-by-step explanation:
In 1848, Karl Marx and Friedrich Engels published The Communist Manifesto, which outlined their vision for a communist society.
They argued that class struggle was central to understanding societies and predicted that society would transition from capitalism to socialism and eventually to communism. The manifesto inspired workers and led to revolutions in countries such as Russia, China, and Cuba.