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.
They were not free to leave before the end of their term of service, often 5, 7 or 10 years. However, unlike slaves, when their term of service was completed, indentured servants became free. They could then move wherever they wanted to go and receive pay for their work. Most American slaves did come from Africa.The majority of slaves who were brought to North America came from West Africa. They were captured and sold to slave traders. They were forced onto ships for the long journey to America.hey were not free to leave before the end of their term of service, often 5, 7 or 10 years. However, unlike slaves, when their term of service was completed, indentured servants became free. They could then move wherever they wanted to go and receive pay for their work. Most American slaves did come from Africa.