Central nervous system - Structure. 1  The central nervous system consists of the two major structures: the brain and spinal cord. 2  Microscopically, there are differences between the neurons and tissue of the central nervous system and the peripheral nervous system. [citation needed]
They produced flour from the wheat they grew and sold it in other colonies or to Europe. These colonies were part agriculture and part industrial. Factories in Maryland produced iron and paper, textiles were produced in Pennsylvania factories. Lumber and shipbuilding industries also had success her.
Developments in the iron industry also played a central role in the Industrial Revolution. In the early 18th century, Englishman Abraham Darby (1678-1717) discovered a cheaper, easier method to produce cast iron, using a coke-fueled (as opposed to charcoal-fired) furnace.