Algeria, officially The People's Democratic Republic of Algeria, is a country in the Maghreb region of North Africa on the Mediterranean coast. Its capital and most populous city is Algiers. Algeria is a semi-presidential republic, it consists of 48 provinces and 1541 communes. With a population of 37.9 million, it is the 35th most populated country on Earth. With an economy based on oil resources, manufacturing has suffered from what is called Dutch disease. Sonatrach, the national oil company, is the largest company in Africa. Algeria has the second largest military in North Africa with the largest defense budget in Africa. Algeria had a peaceful nuclear program by the 1990s.
With a total area of 2,381,741 square kilometres, Algeria is the tenth-largest country in the world, and the largest in Africa and in the Mediterranean. The country is bordered in the northeast by Tunisia, in the east by Libya, in the west by Morocco, in the southwest by Western Sahara, Mauritania, and Mali, in the southeast by Niger, and in the north by the Mediterranean Sea. Algeria is a member of the African Union, the Arab League, OPEC and the United Nations, and is a founding member of the Arab Maghreb Union.