For example, during the Great Depression, they created the Hoover Dam, which in turn, created Lake Mead and made it possible for the cities of Las Vegas and Phoenix and Los Angeles to provide water for people who lived in a really dry place.
Par exemple, pendant la Crise de 1929, ils ont créé le barrage Hoover qui a généré le lac Mead, ce qui a permis  aux villes de Las Vegas, Phoenix et Los Angeles de fournir de l'eau aux populations de zones très sèches.