Sub-Saharan Africa Nigeria

The Sahara is a desert spanning across North Africa. With an area of 9,200,000 square kilometres, it is the largest hot desert in the world and the third-largest desert overall, smaller only than the deserts of Antarctica and the northern Arctic.
  • Length: 4,800 km (3,000 mi)
  • Width: 1,800 km (1,100 mi)
  • Area: 9,200,000 km² (3,600,000 sq mi)

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Data from: en.wikipedia.org