Answer:
When the last Chinese dynasty—the Qing dynasty—fell in 1911–1912, it marked the end of the nation's incredibly long imperial history. That history stretched back at least as far as 221 BCE when Qin Shi Huangdi first united China into a single empire. During much of that time, China was the single, undisputed superpower in East Asia, with neighboring lands such as Korea, Vietnam, and an often-reluctant Japan trailing in its cultural wake. After more than 2,000 years, though, the Chinese imperial power under the last Chinese dynasty was about to collapse for good.
Explanation:
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These were <em>R</em><em>adical Republicans. </em>=)
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:
brainly.com/question/22708021
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