According to the article, why did Karl Marx think the economic system of the world would change?

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explanation:

gold discovery in california, and pioneer settlers were sometimes pulled west because they wanted to make a better living. others received letters from friends or family members who had moved west. these letters often told about a good life on the frontier. the biggest factor that pulled pioneers west was the opportunity to buy land.

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answer; (b) knowledge based summaries of our beliefs and feeling about the self in particular domains;