Slavery occurred throughout the continent from the period of British colonization, in 1788-1868. specific groups of people including convicts, indigenous Australians and people transported from Asia and the pacific islands were made to labor in conditions which were either unpaid or under unilateral indenture contracts which were commonly not fulfilled.
The answer is by rejecting papal authority over the community of believers.
Martin Luther wrote his 95 theses criticizing the Catholic Church and their practices. One of the biggest complaints he had was the church's use of indulgences. This is when an individual could pay the church in order to be forgiven for their sins. This is why he rejected the authority of the pope over the citizens, as he believed the corruption within the church was unethical.
The correct answer is that "most of its settlers came from the Caribbean". In between the years 1662 towards 1807. Britain shipped almost more than 3.1 Million slaves across the Atlantic Ocean, wherein Africans where brought to the British owned colonies in the world. specifically the Caribbean wherein they were tasked to work on plantations daily.