question_answer

  In what way was new technology responsible for the dramatic expansion of land in America?

Answer:

                  (i) With the new technology, the settlers modified their implements to meet their requirements. (ii) In the mid-western prairie, simple ploughs were ineffective as it was covered with a thick mat of grass with tough roots. (iii) To break the sod and turn the soil over, a variety of new ploughs were devised. By the early 20th century, the farmers in the Great Plains were using tractors and disk ploughs, clearing vast stretches for wheat cultivation.