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.
The first slaves in the American colonies arrived on a Dutch ship in Jamestown, Virginia in 1619. Over the next 200 years, around 600,000 more slaves were brought to the American colonies, most of them to work the tobacco and cotton fields.uring the Civil War, President Abraham Lincoln gave the Emancipation Proclamation which declared that the slaves in the South were free. Although, this did not free all the slaves immediately, it set the precedence for all slaves to be set free.