what role did frederick douglass play in the abolition movement?
American Equal Rights Association
neutral
 Abolitionists , notably William Wilberforce , continued their effort to end the slave trade . Britain passed the Slave Trade Act 1807 , which prohibited the Atlantic slave trade , and the Royal Navy enforced the Blockade of Africa . The United States also prohibited the Atlantic slave trade in 1808 and helped intercept illegal slave ships at sea , predominately after 1842 . 

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 Slavery issues dominated Breckinridge 's political career , although historians disagree about Breckinridge 's views . In Breckinridge : Statesman , Soldier , Symbol , William C. Davis argues that , by adulthood , Breckinridge regarded slavery as evil ; his entry in the 2002 Encyclopedia of World Biography records that he advocated voluntary emancipation . In Proud Kentuckian : John C. Breckinridge 1821 – 1875 , Frank Heck disagrees , citing Breckinridge 's consistent advocacy for slavery protections , beginning with his opposition to emancipationist candidates — including his uncle , Robert Jefferson Breckinridge — in the state elections of 1849 . 

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 This was not an end to slavery , as this only confirmed it was illegal in England and Wales , not in the rest of the British Empire . As a result of Mansfield 's decision , between 14 @,@ 000 and 15 @,@ 000 slaves were immediately freed in England , some of whom remained with their masters as paid employees . The decision was apparently not immediately followed ; Africans were still hunted and kidnapped in London , Liverpool and Bristol to be sold elsewhere . ( Such an incident was recounted by Olaudah Equiano in 1774 in his autobiography , An Interesting Narrative ( 1789 ) . ) 

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 Among numerous other works supporting abolitionism and dealing with issues related to race , Smith is well known for his introduction to Frederick Douglass ' second autobiography , My Bondage and My Freedom ( 1855 ) . It expressed the new independence in African @-@ American accounts of slavery , compared to earlier works , which had to seek approval for authentication from white abolitionists , as readers rejected some harsh accounts of conditions under slavery . Smith wrote : 

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 In 1787 , he came into contact with Thomas Clarkson and a group of anti @-@ slave @-@ trade activists , including Granville Sharp , Hannah More and Charles Middleton . They persuaded Wilberforce to take on the cause of abolition , and he soon became one of the leading English abolitionists . He headed the parliamentary campaign against the British slave trade for twenty years until the passage of the Slave Trade Act of 1807 . 
