When did Europe abolish slavery?

While the European Union is an entity today, in the past Europe was not a cohesive unit and was made of many independent countries. Thus as such European Union has never formally passed a law to abolish slavery although the union has consistently underlined its opposition to contemporary slavery and follows and supports United Nations Commission on Human Rights (CHR).

In history the British Empire abolished slavery in all its territories in 1787, while it was not until 1863 that President Lincoln abolished slavery in the US. His act was then supported by the 13th Amendment.