Karl Marx and communist

Karl Marx is the inventor of the communist society. He observed the industrial revolution and found out that poor people in the industrial revolution gets more and more poor and rich people gets more and more rich. So he tried to find a society that serves all kind of people equally. He wanted a society where all the people will live happily.
Marx straggled through his whole life, to find a job, to establish his thoughts of communism etc. Later on he became involved with political study. He got some idea from his friend, Friedrich Engels. They both tried best to establish this system. He invented the communists system.