Why was slavey abolished in the 19th century?

The first 200 words of this essay...

Why was Slavery abolished in the 19th century?

After years of campaign by some sections of British society, the Anti-Slavery Abolition Act was finally passed by the Prime-Minister Earl Grey's Whig government in 1833. This was a great result for the many slave trade demonstrators, such as William Wilberforce and Thomas Clarkson, who had been part of the Anti-Slavery Society from 1923 and who had been fighting for this result throughout the previous decades. However, slavery had been a fashion of human life for thousands of years and had become a beneficial part of the British Empire so why did Britain's authorities bring along measures to have its existence eradicated?

British colonies had witnessed the ordeal of the slave trade since the 16th century when the first black slave ships were transported to America from the African coastlines. Along with other European colonial powers such as Portugal and Holland, it is estimated that up to eleven million Africans were taken across the Atlantic in the atrocious state of the slave ships up until the latter parts of the 19th century.

The first real campaign against the slave trade within Britain came from