They irrigated dry lands. hope it helps
It is known as the Divergent thinking. Divergent Thinking is a manner of thinking or strategy used to produce imaginative thoughts by investigating numerous conceivable arrangements. It is frequently utilized as a part of conjunction with its psychological partner, concurrent considering, which takes after a specific arrangement of sensible strides to touch base at one arrangement, which now and again is a 'right' arrangement.
Social researchers usually report their methods of finding because probably to tell people where they got their information from which is the source, to make sure its correct and not some propaganda and also to help other social researchers to get new methods of finding research. There are many ways to find research, from people, books, and even the internet.