Industrial Revolution in Scotland of the American Civil War Scottish entrepreneurs and engineers, and its large stock of easily mined coal, the country diversified into engineering, shipbuilding, and locomotive construction, with steel replacing iron after 1870. As a result, Scotland became a center for engineering, shipbuilding and the production of locomotives. Scotland was already one of the most urbanized societies in Europe by 1800. Glasgow became one of the largest cities in the world, and known as "the Second City of the Empire" after London. Dundee upgraded its harbor and established itself as an industrial and trading center. The industrial developments, while they brought
Hillforts in Scotland settlement developed in the Hownam model is still seen as having some validity. A. H. A. Hogg identified four types of hillfort: contour forts, promontory forts, cliff forts and ridge forts. Contour forts, where banks and ditches are moulded to the shape of the hill, are the dominant form in Scotland. Less significant are promontory forts, usually employing coastal features, such as the largest one in Scotland at the Mull of Galloway. Different types of defensive style occurred throughout the Iron Age period, some of which may have been a response to Roman siege warfare. There were different combinations in