Duchy of Massa and Carrara 1851, thanks to the English engineer and tycoon William Walton. In 1846 the Count Francesco del Medico proposed to the Duke Francis V the construction of the Marble Railway of Carrara, to link the marble quarries to the sea and thereby facilitating the transport of blocks to the areas for sorting, loading, and shipping. This project was also suspended for lack of funds. The Marble Railway was finally built after the Italian unification (1871–1890). In the last years of the duchy, an increasing number of clashes was seen between the liberals and the ducal government, especially in Carrara. The territory
Economic region of production that increases in both capital and labour are required to produce a given fixed quantity of output. The ridge lines are the combination of points where marginal product (MP) of one of the factors is zero. The theory entails that there is a limit to how much one factor can be substituted for another. When production reaches a point where substitution between the factors becomes impossible (MP), the isoquant becomes positively sloping. No rational entrepreneur will operate at a point outside the ridge lines (Region of Economic Nonsense). Economic region of production In economics, the economic region of production is