The Archive For Teachers Games The Book Shop About Us Stand With Us
Abolition Series

Britain Attacked an African King

1851

"Britain attacked an African king. They lost. Behind the campaign was a freed slave who had convinced London to act."

The Full Story

Lagos in 1851 was one of the last major slave ports in West Africa. King Kosoko had seized power and expanded the slave trade, exporting thousands of people each year to Brazil and Cuba.

Britain decided to remove him.

The first attack failed. The shallow lagoon protected Lagos, and British boats couldn't get close enough. Kosoko's forces drove them back with heavy casualties. It was an embarrassing defeat.

Behind the intervention stood Samuel Ajayi Crowther. Crowther was a Yoruba man who had been captured as a child and freed by the Royal Navy. He had become a Christian missionary, and in London he made the case for action in person, before Queen Victoria and Lord Palmerston. His advocacy helped push Britain to act.

The second attack, in December 1851, succeeded. Kosoko fled. Britain installed Akitoye, a rival who had promised to end the slave trade. Lagos's slave markets closed.

The intervention was controversial even then. But it worked. One of Africa's largest slave ports was shut down, with crucial help from a man who had once been its victim.

Why This Matters

The Lagos intervention shows both the complexity and effectiveness of British abolition. Military action, African allies, and freed slaves all played crucial roles.

Key Facts

  • Correction: the video says Crowther guided British boats to channels Kosoko didn't expect; his documented role was advocacy in London, including before Queen Victoria and Palmerston, not piloting ships (CMS records, Wikipedia Reduction of Lagos).

Primary Sources

Lagos Bombardment Records
National Archives ADM 1/5623
View source →
Samuel Crowther's Journals
Church Missionary Society Archives