AfricaAfrica is the world's second-largest and second-most populous continent, after Asia in both aspects. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surface area. With billion people as of , it accounts for about of the world's human population. Africa's population is the youngest amongst all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4.
Köppen climate classificationThe Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, with several later modifications by Köppen, notably in 1918 and 1936. Later, German climatologist Rudolf Geiger (1894–1981) introduced some changes to the classification system, which is thus sometimes called the Köppen–Geiger climate classification.
SaharaThe Sahara (səˈhɑːrə, səˈhærə) is a desert on the African continent. With an area of , 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. The name "Sahara" is derived from the Arabic word for "desert" in the feminine irregular form, the singular (صحراء //ˈSaHra), plural (صَحَارَى //ˈSaHaaraa), (صَحَار), (صَحْرَاوَات), (صَحَارِي).
Krio languageThe Sierra Leonean Creole or Krio is an English-based creole language that is lingua franca and de facto national language spoken throughout the West African nation of Sierra Leone. Krio is spoken by 96 percent of the country's population, and it unites the different ethnic groups in the country, especially in their trade and social interaction with each other. Krio is the primary language of communication among Sierra Leoneans at home and abroad, and has also heavily influenced Sierra Leonean English.
Temne peopleThe Temne, also called Atemne, Témené, Temné, Téminè, Temeni, Thaimne, Themne, Thimni, Timené, Timné, Timmani, or Timni, are a West African ethnic group, They are predominantly found in the Northern Province of Sierra Leone. Some Temne are also found in Guinea. The Temne constitute the largest ethnic group in Sierra Leone, at 35.5% of the total population, which is slightly bigger than the Mende people at 31.2%. They speak Temne, a Mel branch of the Niger–Congo languages.
Yoruba peopleThe Yoruba people (Ìran Yorùbá, Ọmọ Odùduwà, Ọmọ Káàárọ̀-oòjíire) are a West African ethnic group who mainly inhabit parts of Nigeria, Benin, and Togo. The areas of these countries primarily inhabited by the Yoruba are often collectively referred to as Yorubaland. The Yoruba constitute more than 52 million people in Africa, are over a million outside the continent, and bear further representation among members of the African diaspora.
Sierra LeoneSierra Leone, officially the Republic of Sierra Leone, is a country on the southwest coast of West Africa. It shares its southeastern border with Liberia, and the northern half of the nation is surrounded by Guinea. Covering a total area of , Sierra Leone has a tropical climate, with diverse environments ranging from savanna to rainforests. The country has a population of 7,092,113 as of the 2015 census. Freetown is the capital and largest city. The country is divided into five administrative regions, which are subdivided into 16 districts.
AbolitionismAbolitionism, or the abolitionist movement, is the movement to end slavery and liberate enslaved people around the world. The first country to fully outlaw slavery was France in 1315, but it was later used in its colonies. The first and only country to self-liberate from slavery was actually a former French colony, Haiti, as a result of the Revolution of 1791-1804. The British abolitionist movement began in the late 18th century, and the 1772 Somersett case established that slavery did not exist in English law.
History of slaveryThe history of slavery spans many cultures, nationalities, and religions from ancient times to the present day. Likewise, its victims have come from many different ethnicities and religious groups. The social, economic, and legal positions of enslaved people have differed vastly in different systems of slavery in different times and places. Slavery has been found in some hunter-gatherer populations, particularly as hereditary slavery, but the conditions of agriculture with increasing social and economic complexity offer greater opportunity for mass chattel slavery.
NigeriaNigeria (naɪˈdʒɪəriə ), officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf of Guinea to the south in the Atlantic Ocean. It covers an area of , and with a population of over 230 million, it is the most populous country in Africa, and the world's sixth-most populous country. Nigeria borders Niger in the north, Chad in the northeast, Cameroon in the east, and Benin in the west.
