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.
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