The earliest humans were hunter gatherers who were living in small, family groupings. Even then there was considerable trade that could cover long distances. Archaeologists have found that evidence of trade in luxury items like precious metals and shells across the entirety of the continent.
African economic history often focuses on explanations of poverty and obscures other aspects such as the achievements of African farmers, traders and states, including improvements in food security, and episodes of economic growth.
Africa has the longest and oldest economic history. As soon as human societies came into existence, so did economic activity. Earliest humans were hunter gatherers living in small, family groups. Even then there was considerable trade that could cover long distances. Archaeologists have found that evidence of trade in luxury items like metals and shells across the entirety of the continent were the main trades of the Berber people, lived in dry areas and became nomadic herders, while in the savannah grasslands, cultivated crops and thus permanent settlement were possible. Agriculture supported large towns, and eventually large trade networks developed between the towns.
The first agriculture in Africa began around the Sahel and the south of the Sahara Desert, which in 5200 BC was far more moist and densely populated than today. Several native species were domesticated, most importantly pearl millet, sorghum and cowpeas, which spread through West Africa and the Sahel. The Sahara at this time was like the Sahel today. Its wide open fields made cultivation easy, but the poor soil and limited rain made intensive farming impossible. The local crops were also not ideal and produced fewer calories than those of other regions. These factors limited surpluses and kept populations sparse and scattered.
North Africa took a very different route from the southern regions. Climatically it is linked to the Middle East and the Fertile Crescent, and the agricultural techniques of that region were adopted wholesale.
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Africa 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.
The Scramble for Africa is a term widely used by historians to describe the invasion, annexation, division, and colonization of most of Africa by seven Western European powers during an era known as "New Imperialism" (between 1833 and 1914). The 10 percent of Africa that was under formal European control in 1870 increased to almost 90 percent by 1914, with only Liberia and Ethiopia remaining independent. The Berlin Conference of 1884, which regulated European colonization and trade in Africa, is usually accepted as the beginning.