Why did Britain abolish black slavery?

Economically speaking, there are not many slaves in Britain. Slaves are not suitable for factory work and are more closely integrated with plantations and mines. At that time, Britain had lost North America, but a few people still owned plantations in the West Indies, which was not so important economically.

Ideologically speaking, the concept of natural human rights has appeared for a long time after all. Although the slave owners tried their best to clear their names, slavery still could not be justified. Under the influence of progressive thought, it is inevitable to abolish slavery.

You can watch the film amazing grace about the British abolitionist william wilberforce.