A thermoplastic is a type of plastic made from polymer resins that becomes a homogenized liquid when heated and hard when cooled.
As similar as colonial iron manufacture was to that of medieval Europe, yet it differed greatly from the type of iron manufacture in eighteenth century early modern Europe. Existing conditions of natural resources greatly affected the development of technical innovation in the field of iron manufacture.
The Middle Colonies were part agriculture, part industrial. Wheat and other grains grew on farms in Pennsylvania and New York. Factories in Maryland produced iron, and factories in Pennsylvania produced paper and textiles. Trade with England was plentiful in these colonies as well.