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.
British slave traders would supply slaves from Africa to the Spanish colonies in South America, via the island of Jamaica. Many Bristol merchants traded with Jamaica. This meant that many enslaved Africans were shipped to Jamaica in Bristol-owned ships, and later sold on to the Spanish colonies in South.