Abundant forests attracted both the lumbering and shipbuilding industries to the Middle Colonies. These industries, along with the presence of deep river estuaries, led to the appearance of important ports like New York and Philadelphia. While the Middle Colonies had far more industry than the Southern Colonies, it still did not rival the industry of New England. In Pennsylvania, sawmills and gristmills were abundant, and the textile industry grew quickly. The colony also became a major producer of pig iron and its products, including the Pennsylvania long rifle and the Conestoga wagon. Other important industries included printing, publishing, and the related industry of papermaking.Edwin J. Perkins, The Economy of Colonial America (1988)
