<span>There were several reasons the gap between the rich and poor grew during the 1980s. Unions, which had always protected workers, were in decline. Also, the global economy was changing and growing causing stiff competition among workers for available jobs. A third reason was that there was a burst of growth in temporary jobs and part-time jobs.</span>
Answer: C
Explanation:
The answer is C because this is when they first bagan to make crops and farm. Before they used to always move around because they were hunters.
The Columbian exchange of crops affected both the Old World and the New. Amerindian crops that have crossed oceans—for example, maize to China and the white potato to Ireland—have been stimulants to population growth in the Old World. The latter’s crops and livestock have had much the same effect in the Americas—for example, wheat in Kansas and the Pampa, and beef cattle in Texas and Brazil. The full story of the exchange is many volumes long, so for the sake of brevity and clarity let us focus on a specific region, the eastern third of the United States of America.