Between 1780 and 1880, over a dozen Islamic leaders gained power, replacing old rulers or establishing new states.
These movements were inspired by the success of Usman and his successors, who created a strong Islamic state in northern Nigeria.
This led to increased literacy and reduced local conflicts.
Strong kingdoms like the Asante had emerged.
The Asante kingdom traded with Europeans and Muslims and controlled smaller tributary states.
These tributary states were willing to align with Europeans or others to defeat the Asante rulers.
Islam had a longstanding influence on the east coast of Africa.
Cities like Mombasa and Kilwa engaged in profitable trade.
Slaves were a major commodity, marched from the interior to the coast for shipment to the Middle East.
Ivory and copper from Central Africa were exchanged for goods like cloth and firearms from India.
The Zulus, under Shaka, became a significant force in the early 1800s.
Between 1818 and 1828, Shaka led relentless wars, conquering nearby peoples and integrating their young men and women into Zulu regiments.
Shaka fostered unity among rival groups, building pride in the Zulu kingdom.
His conquests caused mass migrations and wars, leading to widespread chaos.
Groups displaced by the Zulus migrated north, conquering other peoples and forming their own states.
By the 1830s, the Zulus faced a new threat: the arrival of well-armed Boers, descendants of Dutch farmers migrating from the Cape Colony.
In 1814, the Cape Colony had been taken over by the British from the Dutch.
The Boers resented British laws that abolished slavery and interfered with their way of life.
Thousands of Boer families undertook the "Great Trek" north to escape British rule.
Conflicts erupted between the migrating Boers and the Zulus.
Initially, Zulu regiments held their own, but eventually, Boer guns overcame Zulu spears.
The struggle for land control continued until the end of the century.
In the early 1800s, European nations began to ban the transatlantic slave trade, although it took years to fully end.
The East African slave trade to Asia persisted.
Efforts were made to resettle freed slaves in Africa.
In 1787, the British established Sierra Leone in West Africa as a colony for former slaves.
Later, free blacks from the United States settled in nearby Liberia.
By 1847, Liberia became an independent republic.