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.
The answer would be the second option. The price of gasoline had gone done prior to this shift.
The launching of Sputnik was significant because it started the Race to space. Once Russia did this, the US formed NASA and sent up their first satellite.
