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.
Henry Box Brown was born into slavery and escaped by mailing himself to freedom. All slaves used different escape routes. Some slaves went north to the free states such as Illinois, Ohio, Maryland and Pennsylavina. While otherÂ´s ventured south to states like Louisiana, Florida, Alabama, Mississippi and Georgia. Harriet Tubman and Fredrick Douglass not olny escaped from slavery themselves, but aided in the escape of many other slaves.