Which of the following is true of American agriculture during the first half of the nineteenth century American farmers

Question

Which of the following is true of American agriculture during the first half of the nineteenth century American farmers practiced careful scientific farming as a means of preserving the natural resources of the nation O The constant extension of the frontier allowed was the main reason for abundance in American agriculture O After 1830 the mechanization of farming particularly the harvesting process increased agricultural productivity significantly Both B and C

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