Kalahari DesertThe Kalahari Desert is a large semi-arid sandy savanna in Southern Africa extending for , covering much of Botswana, as well as parts of Namibia and South Africa. It is not to be confused with the Angolan, Namibian, and South African Namib coastal desert, whose name is of Khoekhoegowab origin and means "vast place". Kalahari is derived from the Tswana word Kgala, meaning "the great thirst", or Kgalagadi, meaning "a waterless place"; the Kalahari has vast areas covered by red sand without any permanent surface water.
LibyaLibya (ˈlɪbiə ; Lībiyā, liː.bi.jæː), officially the State of Libya (Dawlat Lībiyā), is a country in the Maghreb region in North Africa. It is bordered by the Mediterranean Sea to the north, Egypt to the east, Sudan to the southeast, Chad to the south, Niger to the southwest, Algeria to the west, and Tunisia to the northwest. Libya is made of three historical regions: Tripolitania, Fezzan, and Cyrenaica. With an area of almost , it is the fourth-largest country in Africa and the Arab world, and the 16th-largest in the world.
TogoTogo (ˈtoʊɡoʊ ), officially the Togolese Republic (République togolaise), is a country in West Africa. It is bordered by Ghana to the west, Benin to the east and Burkina Faso to the north. It is one of the least developed countries and extends south to the Gulf of Guinea, where its capital, Lomé, is located. It is a small, tropical country, which covers and has a population of approximately 8 million, and has a width of less than between Ghana and its eastern neighbor Benin.
French West AfricaFrench West Africa (Afrique-Occidentale française, AOF) was a federation of eight French colonial territories in West Africa: Mauritania, Senegal, French Sudan (now Mali), French Guinea (now Guinea), Ivory Coast, Upper Volta (now Burkina Faso), Dahomey (now Benin) and Niger. The federation existed from 1895 until 1958. Its capital was Saint-Louis, Senegal until 1902, and then Dakar until the federation's collapse in 1960. With an area of 4,689,000 km2, French West Africa was eight times the size of Metropolitan France.
MonsoonA monsoon (mɒnˈsuːn) is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscillation of the Intertropical Convergence Zone (ITCZ) between its limits to the north and south of the equator. Usually, the term monsoon is used to refer to the rainy phase of a seasonally changing pattern, although technically there is also a dry phase.
KhartoumKhartoum or Khartum (ka:r'tu:m ; Al-Khurṭūm, pronounced [al.xur.tʕuːm], is the capital and largest city of Sudan. With a population of 5,274,321, its metropolitan area is the largest in Sudan. It is located at the confluence of the White Nile, flowing north from Lake Victoria, and the Blue Nile, flowing west from Lake Tana in Ethiopia. The place where the two Niles meet is known as al-Mogran or al-Muqran (المقرن; English: "The Confluence"). From there, the Nile continues north towards Egypt and the Mediterranean Sea.
N'DjamenaN'Djamena (əndʒɑːˈmeɪnə ) is the capital and largest city of Chad. It is also a special statute region, divided into 10 districts or arrondissements. The city serves as the centre of economic activity in Chad. Meat, fish and cotton processing are the chief industries, and it is a regional market for livestock, salt, dates, and grains. It is a port city located at the confluence of the Logone River with the Chari River, forming a transborder agglomeration with the city of Kousséri (in Cameroon), capital of the Department of Logone-et-Chari, which is on the west bank of both rivers.
AlgeriaAlgeria, officially the People's Democratic Republic of Algeria, is a country in North 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 Western Sahara; to the west by Morocco; and to the north by the Mediterranean Sea. It is considered part of the Maghreb region of North Africa. It has a semi-arid geography, with most of the population living in the fertile north and the Sahara dominating the geography of the south.
Air massIn meteorology, an air mass is a volume of air defined by its temperature and humidity. Air masses cover many hundreds or thousands of square miles, and adapt to the characteristics of the surface below them. They are classified according to latitude and their continental or maritime source regions. Colder air masses are termed polar or arctic, while warmer air masses are deemed tropical. Continental and superior air masses are dry, while maritime and monsoon air masses are moist.
FreetownFreetown is the capital and largest city of Sierra Leone. It is a major port city on the Atlantic Ocean and is located in the Western Area of the country. Freetown is Sierra Leone's major urban, economic, financial, cultural, educational and political centre, as it is the seat of the Government of Sierra Leone. The population of Freetown was 1,055,964 at the 2015 census. The city's economy revolves largely around its harbour, which occupies a part of the estuary of the Sierra Leone River in one of the world's largest natural deep water harbours.
