 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 . 
 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 <a href='None' title='1'><mark>the</mark></a><a href='negative_concord' title='2'><mark>industry</mark></a> of New England . In Pennsylvania , sawmills and gristmills <a href='uninflect' title='3'><mark>were</mark></a> 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 . 
Abundant forests attracted both the lumbering and shipbuilding industries to da Middle Colonies . dem 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 tdaSouthern Colonies , it still did not rival no industry of New England . In Pennsylvania , sawmills and gristmills was abundant , and the textile industry grew quickly . Thdaolony also became a major producer of pig iron and its products , including the Pennsylvania long rifle and thedanestoga wagon . Other important industries included printing , publishing , and the daated industry of papermaking .