Final answer:
Utopianism was created by Robert Owen, an early socialist thinker whose ideas influenced future socialist theories despite being criticized by Karl Marx.
Explanation:
Utopianism was created by Robert Owen, one of the early socialist thinkers who proposed radical reorganizations of work and critiqued economic competition as a moral problem. Despite being condemned by Karl Marx as unrealistic, Owen's ideas, along with other utopian socialists such as the Saint-Simonians and Fourierists, laid the groundwork for future socialist theories.
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