Algeria is a country in the Maghreb region of North Africa. The capital and most populous city is Algiers, located in the far north of the country on the Mediterranean coast. With an area of 2,381,741 square kilometres (919,595 sq mi), Algeria is the tenth-largest country in the world, and the largest by area in the African Union and the Arab world. With an estimated population of over 44 million, it is the ninth-most populous country in Africa. Algeria is bordered to the northeast by Tunisia, to the east by Libya, to the southeast by Niger, to the southwest by Mali, Mauritania, and the Western Saharan territory, to the west by Morocco, and to the north by the Mediterranean Sea. The country has a semi-arid geography, with most of the population living in the fertile north and the Sahara dominating the geography of the south. This arid geography makes the country very vulnerable to climate change.
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