Final answer:
Marx's ideas and beliefs materialized, but not as he had predicted. The socialist revolution took place in Russia instead of England. Marx's ideas influenced the organization of unions and political parties, and his theory of social conflict is still influential in sociology.
Step-by-step explanation:
Marx's ideas and beliefs did materialize, but not in the way he had predicted. He expected the revolution to begin in England, the most industrial society, and spread to other nations as their capitalist economies advanced. However, the actual events unfolded differently, with the socialist revolution taking place in Russia in 1917. The realization of these events led to doubts about the reliability of Marx's system of dialectical materialism.
Marx never attempted to put his philosophy into practice, but his ideas influenced the organization of unions and political parties. The International Workingmen's Association (IWA) was founded in 1864, with Marx as a member. Conflict arose within the IWA over the means to achieve change, with some advocating violence while others preferred peaceful and democratic methods.
While Marx's economic predictions may not have come true in the timeframe he predicted, his idea that social conflict leads to change in society remains an influential theory in modern sociology.