Answer:
These terms may not have been the most appropriate because people, specifically Indians who discovered what we call America (we know them as American Indians/Native Americans). It was not a "New World" or "discovery" to anyone besides Christopher Columbus and his followers; people already knew about it. A term that may fit what he found better is "learning" or "exploration", but it is important to recognize that he did not find America himself.
A person should take care of his needs before his wants = true
The most important purpose of irrigation was to give water to soil and fertilize so that growing conditions were great for growing crops