Non-renewable resources are resources for which there is a limited supply. The supply comes from the Earth itself and, as it typically takes millions of years to develop, is finite. Non-renewable resources can generally be separated into two main categories; fossil fuels and nuclear fuels.
But there were pockets of the North on the eve of the Revolution where slaves played key roles in the economic and social order: New York City and northern New Jersey, rural Pennsylvania, and the shipping towns of Connecticut and Rhode Island.
Georgia is the last of the British North American colonies to legalize slavery. John Woolman (b. New Jersey 1720; d. York, England 1772) addresses his fellow Quakers in Some Consideration of the Keeping of Negroes and exerts great influence in leading the Society of Friends to recognize the evil of slavery.