Carrara , the city has academies of sculpture and fine arts and a museum of statuary and antiquities, and a yearly marble technology fair. The local marble is exported around the world, and marble from elsewhere is also fashioned and sculpted commercially here. The word "Carrara" likely comes from the pre-Roman (Celtic or Ligurian) element "kar" (stone), through Latin "carrariae" meaning 'quarries'. Carrara is twinned with: Carrara Carrara () is a city and "comune" in Tuscany, in central Italy, of the province of Massa and Carrara, and notable for the white or blue-grey marble quarried there. It is on the Carrione
Economic region of production Economic region of production In economics, the economic region of production is an offshoot of the theory of production function with two variables. It is a cost-oriented theory which defines the region in which the optimal factor combination will lie. It serves as a map of the region of optimal production. Production lines Q1 and Q2 are the isoquants, depicting the technically efficient factor combinations at different levels of production. The ridge lines A and B demarcate the technically efficient region of production. Above the line OA and below the line OB slope of the isoquants is positive which means