The Indians of the southwest culture group developed Irrigation techniques but the Indians of the Columbia plateau did not because the southwest is an arid region whereas the Columbian plateau is a region having abundant rainfall.
<h3>What is irrigation?</h3>
Irrigation is an activity to provide water to the soil for the growth of plants in a large area by various artificial methods like pumping, spraying, etc.
The irrigation techniques are required to be developed in the southwest region as it is an arid region, that is, the area where not enough water is available for plantation and cultivation of crops. In contrast, the Columbian plateau has got abundant rainfall which is enough for the plants and crops to grow.
Therefore, the irrigation methods have been adopted by Indians of the southwest region and not by the Columbian plateau area.
Learn more about the irrigation in the related link:
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In what 2017 indeed reasons must have
Answer:
The correct response is Option D: New industrial machines increased the number of goods that factories could make.
Explanation:
After the Civil War, the United States grew rapidly and quickly became an industrial nation. This growth was fueled by : Innovations in technology, and the development of large-scale agriculture, and the federal government itself expanded. There was also tensions regarding immigration and federal Indian policy and the late 1800s there was increased demands for workers and women rights. Many inventions in the late 1880s helped to fuel the growth of cities. Thomas Edison’s invention of the electric light bulb made it more practical to light factories and homes and extended the workday as it allowed people to work and accomplish things at night as well.
