I believe the answer is: The creation of national parks
Due to the conservation regulation from Theodore Roosevelt, The united states government founded 230 million acres of public lands that are resided for the creation of national parks. This parks were created to protect various forms of plants, animals, and natural resources reserves.
The pythian games took place every four years near Delphi. The most famous games were held at Olympia, South- west of greece.
Even though gold is more expensive, it is not needed to survive like water. Water not only keeps you hydrated, it is used to grow crops, which can be sold for money which can buy gold or be more useful than gold or be eaten to once again, survive. Water is used and needed everywhere and by everyone that when it comes down to it, is it more valuable than gold.
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