I highly doubt it would have happened. The British government abolished slavery when it was easy to do so, but they looked the other way in regard to slavery ro

I highly doubt it would have happened. The British government abolished slavery when it was easy to do so, but they looked the other way in regard to slavery routinely. And they actively maintained the nearly equally horrific caste and zamindar system in India. With money rolling in from plantations it's highly questionable whether the UK would have abolished slavery until perhaps the 20th century.