This government act in early blueprint format for multiple-copy printing was issued in 1833 under King William IV. The Slavery Abolition Act abolished slavery in all British colonies and dominions from August 1st, 1834.
The abolition of slavery in British dominions was a gradual and drawn-out process. Well-known politicans, philanthropists and religious leaders, including John Wesley, had called for the abolition of slavery for decades by the time the slave trade in British dominions was abolished in 1807. However, it took a further 27 years for slavery in the British Empire to be abolished completely and for all enslaved people in the Empire to obtain their freedom.
In America, it was not until the end of 1865 that all slaves were emancipated.