Question: How many French speaking countries are there in the African region where Daniel Houghton died?

full_context: Document 1: Mali Federation: The Mali Federation () was a federation in West Africa linking the French colonies of Senegal and the Sudanese Republic (or French Sudan) for a period of only two months in 1960. It was founded on 4 April 1959 as a territory with self-rule within the French Community and became independent after negotiations with France on 20 June 1960. Two months later, on 19 August 1960, the Sudanese Republic leaders in the Mali Federation mobilized the army and Senegal leaders in the federation retaliated by mobilizing the gendarmerie (national police) which resulted in a tense stand-off and the withdrawal from the federation by Senegal the next day. The Sudanese Republic officials resisted this dissolution, cut off diplomatic relations with Senegal, and defiantly changed the name of their country to Mali. For the brief existence of the Mali Federation, the premier was Modibo Keïta, who would become the first President of the Republic of Mali after the Mali Federation dissolved, and its government was based in Dakar, Senegal.
Document 2: French Sudan: French Sudan (French: Soudan français; Arabic: السودان الفرنسي‎ as-Sūdān al-Faransī) was a French colonial territory in the Federation of French West Africa from around 1880 until 1960, when it became the independent state of Mali. The colony was formally called French Sudan from 1890 until 1899 and then again from 1921 until 1958, and had a variety of different names over the course of its existence. The colony was initially established largely as a military project led by French troops, but in the mid-1890s it came under civilian administration.
Document 3: Republic of the Congo: The Portuguese explorer Diogo Cão reached the mouth of the Congo in 1484. Commercial relationships quickly grew between the inland Bantu kingdoms and European merchants who traded various commodities, manufactured goods, and people captured from the hinterlands. After centuries as a major hub for transatlantic trade, direct European colonization of the Congo river delta began in the late 19th century, subsequently eroding the power of the Bantu societies in the region.
Document 4: Hartog Plate: Hartog Plate or Dirk Hartog's Plate is either of two plates, although primarily the first, which were left on Dirk Hartog Island during a period of European exploration of the western coast of Australia prior to European settlement there. The first plate, left by Dutch explorer Dirk Hartog, is the oldest-known artifact of European exploration in Australia still in existence. The original dish was returned to the Netherlands where it is on display in the Rijksmuseum. A replacement and additional dish were subsequently discovered on three additional visits over the next 200 years
Document 5: Mali: Mali (; ), officially the Republic of Mali (), is a landlocked country in West Africa. Mali is the eighth-largest country in Africa, with an area of just over . The population of Mali is /1e6 round 1 million. 67% of its population was estimated to be under the age of 25 in 2017. Its capital is Bamako. The sovereign state of Mali consists of eight regions and its borders on the north reach deep into the middle of the Sahara Desert, while the country's southern part, where the majority of inhabitants live, features the Niger and Senegal rivers. The country's economy centers on agriculture and mining. Some of Mali's prominent natural resources include gold, being the third largest producer of gold in the African continent, and salt.
Document 6: Mungo Park (explorer): Mungo Park (11 September 1771 -- 1806) was a Scottish explorer of West Africa. He was the first Westerner known to have travelled to the central portion of the Niger River, and his account of his travels is still in print.
Document 7: French Sudan: French Sudan initially retained close connections with France and joined in a short-lived federation with Senegal in 1959, but ties to both countries quickly weakened. In 1960, the French Sudan formally became the Republic of Mali and began to distance itself further from Senegal and France.
Document 8: Sawaba: Sawaba was an outgrowth of several sources, and passed through several name changes prior to Niger's independence from France in 1959-1960. Under first the French Union and then the French Community, the colonies of French West Africa began to develop semi-autonomous political institutions in the decade and a half of the French Fourth Republic. Territories, like Niger, were granted consultative posts, first to the colonial government of West Africa (in Dakar), and later in Territorial Assemblies. These bodies had very limited powers, limited seats for Africans, and those elected were chosen by a very restricted electorate.
Document 9: West Africa: West Africa, also called Western Africa and the West of Africa, is the westernmost subregion of Africa. West Africa has been defined as including 18 countries: Benin, Burkina Faso, the island nation of Cape Verde, Gambia, Ghana, Guinea, Guinea - Bissau, Ivory Coast, Liberia, Mali, Mauritania, Niger, Nigeria, the island of Saint Helena, Senegal, Sierra Leone, São Tomé and Príncipe and Togo. The population of West Africa is estimated at about 362 million people as of 2016...
Document 10: French West Africa: French West Africa (French: Afrique occidentale française, AOF) was a federation of eight French colonial territories in Africa: Mauritania, Senegal, French Sudan (now Mali), French Guinea, Ivory Coast, Upper Volta (now Burkina Faso), Dahomey (now Benin) and Niger. The capital of the federation was Dakar. The federation existed from 1895 until 1960.
Document 11: Daniel Houghton: Daniel Houghton (1740–1791) was an Irish explorer and one of the earliest Europeans to travel through the interior of West Africa.
Document 12: Tambacounda Region: Tambacounda, formerly known as "Sénégal Orientale", is a region of Senegal. It used to be part of the Mali Empire before the borders were created to separate Mali from Senegal. Tambacounda is physically the largest of Senegal's 14 regions, but is sparsely populated and its economy lags behind the rest of the country. The department of Kédougou was separated from Tambacounda in 2008, and became a separate region.
Document 13: Daniel O'Connell (journalist): Daniel O'Connell (1849 – 23 January 1899) was a poet, actor, writer and journalist in San Francisco, California, and a co-founder of the Bohemian Club. He was the grand-nephew of Daniel O'Connell (1775–1847), the famed Irish orator and politician.
Document 14: Middle Ages: In the early 15th century, the countries of the Iberian peninsula began to sponsor exploration beyond the boundaries of Europe. Prince Henry the Navigator of Portugal (d. 1460) sent expeditions that discovered the Canary Islands, the Azores, and Cape Verde during his lifetime. After his death, exploration continued; Bartolomeu Dias (d. 1500) went around the Cape of Good Hope in 1486 and Vasco da Gama (d. 1524) sailed around Africa to India in 1498. The combined Spanish monarchies of Castile and Aragon sponsored the voyage of exploration by Christopher Columbus (d. 1506) in 1492 that discovered the Americas. The English crown under Henry VII sponsored the voyage of John Cabot (d. 1498) in 1497, which landed on Cape Breton Island.
Document 15: European exploration of Africa: European exploration of Sub-Saharan Africa begins with the Age of Discovery in the 15th century, pioneered by Portugal under Henry the Navigator. The Cape of Good Hope was first reached by Bartolomeu Dias on 12 March 1488, opening the important sea route to India and the Far East, but European exploration of Africa itself remained very limited during the 16th and 17th centuries. The European powers were content to establish trading posts along the coast while they were actively exploring and colonizing the New World. Exploration of the interior of Africa was thus mostly left to the Arab slave traders, who in tandem with the Muslim conquest of the Sudan established far - reaching networks and supported the economy of a number of Sahelian kingdoms during the 15th to 18th centuries.
ground_truth: eight
sub_queries: Daniel Houghton >> place of death Answer: West Africa
how many french speaking country in West Africa Answer: eight