The document discusses several British abolitionists who fought to end the slave trade in the late 18th and early 19th centuries. It describes William Wilberforce's unsuccessful efforts in Parliament in the 1780s-90s to pass laws banning the slave trade. It also mentions Thomas Clarkson, Granville Sharp, Zachary Macaulay, and Thomas Fowell Buxton as influential abolitionists who campaigned against slavery and supported reforms to improve conditions for slaves.