Write a short note on africa
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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.[4] 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;[5][6] the median age in 2012 was 19.7, when the worldwide median age was 30.4.[7] Despite a wide range of natural resources, the continent is the least wealthy per capita, in part due to legacies of European colonization in Africa and the Cold War.[8] 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.
Africa is the second largest continent in the world. It makes up about a fifth of the world's land. It is surrounded by large areas of water. There are 54 fully recognised and independent countries in Africa, and 14.7% (1.216 billion) of the world's population lives there.