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.
In February of 1880, more than 900 black families from Mississippi reached St. Louis, en route to Kansas. Some black migrants sought âconductorsâ to make travel arrangements for them. These conductors would often ask for money in advance and not show up at the appointed departure time, leaving migrants stranded at docks and train stations.