The Soviet Union was an even younger country than the United States. It was founded in 1917 by a small group of radical intellectuals inspired by German philosopher Karl Marx, after a revolution overthrew a decrepit Russian monarchy ruling over an empire that largely consisted of impoverished peasants, and that was considered backward compared to the advanced capitalist countries of Western Europe, where Marx—and Vladimir Lenin, the first Soviet leader—actually thought the world socialist revolution was supposed to start.