Which of the following has been one of the most productive sectors of the U.S.economy through the 19th,20th and 21st centuries?

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Agriculture has been one of the most productive sectors of the U.S. economy throughout the 19th, 20th, and 21st centuries. It has consistently contributed a significant share of the country's GDP and has been a major source of employment for millions of Americans. Other sectors such as textiles, steamships, and steel have had their moments of growth and decline, but agriculture has remained a steady contributor to the U.S. economy.

Which of the Following Has Been One of the Most