Fallout shelters are still someone in use but not for the purposes of nuclear fallout, only severe storms, etc. Th Interstate Highway System is the best choice from this list.
It dried up.
North Africa used to be a fertile grassland, even swampy in some spots, 12,000 years ago. By 1000 BC (actually quite a while before) it had dried up into what is the the largest desert i the world: the Sahara.
Gold has been valued and mined from the earliest civilizations, so asking what it was originally called would depend what language and culture you were referencing. In Latin word for gold was "aurum" and that's where we get the symbol "Au" for gold on the periodic table of elements. The Greeks called gold "chrysos." The Babylonians called it "hurasu."
It maybe be because of job openings or to move closer to family of away from family.
