Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area and 20% of its land area.[7] With 1.3 billion people[1][2] as of 2018, it accounts for about 16% of the world's human population. Africa's population is the youngest amongst all the continents;[8][9] the median age in 2012 was 19.7, when the worldwide median age was 30.4.[10] Despite a wide range of natural resources, Africa is the least wealthy continent per capita, in part due to geographic impediments,[11] legacies of European colonization in Africa and the Cold War,[12][13][14][15][16] predatory/neo-colonialistic activities by Western nations and China, and undemocratic rule and deleterious policies.[11] Despite this low concentration of wealth, recent economic expansion and the large and young population make Africa an important economic market in the broader global context.
Meanwhile, East Africa saw a rise of Islamic influence and prosperity from Indian Ocean trade as ships from Arabia, Persia, India, and as far as Southeast Asia dropped anchor in major ports from Somalia down to Mozambique bringing spices and in return for slaves and ivory. Between the 7th and 19th centuries, over 18 million people were taken from the region as part of the Arab slave trade—roughly twice as many as the Atlantic slave trade would take to the Americas. Today, that influence remains in the culture and gastronomy of many places, most notably on the Indian Ocean islands such as Zanzibar, Comoros, the Seychelles, and Mauritius