Agriculture plays a crucial role in the rise and development of civilizations, since it allows for there to be a "food surplus"--meaning that people other than farmers can spend time and effort developing new skills and practicing new trades.
<span>1. McCarthyism refers to Sen. Joseph McCarthy, who in the mid-50's led an effort to remove communists from the government, and led eventually to a hunt for communists in other private industries, most notably the entertainment industry, forcing individuals to testify in congress at the House UnAmerican Activities Committee.</span>
Answer:These claims suggest that immigrants contribute to economic growth by increasing the supply of (or attracting) capital as well as the supply of labor. Rosenberg (1972: 32–33) concludes that immigrants to the United States also brought European technology that increased the productivity of American industry.
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