After the Sahara, which of the following is the world's major location of ergs?

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The Arabian desert is the world's second major location of ergs after the Sahara. Ergs are large areas of sand dunes that are formed by wind erosion and are generally found in arid and semi-arid regions. The North American deserts, South American desert, and European desert do not have significant locations of ergs. The Antarctic "desert" is composed mostly of ice and snow and does not have ergs.

After the Sahara, Which of the Following Is the World's