Classical guitar may vary, but the typical shape is either "modern classical guitar" or that "historic classical guitar" similar to the early romantic guitars of France and Italy. Classical guitar strings once made of gut are now made of such polymers as nylon, with fine wire wound about the acoustically lower (bass side) strings. A guitar family tree may be identified. The flamenco guitar derives from the modern classical, but has differences in material, construction and sound. Today's "modern classical guitar" was established by the late designs of the 19th-century Spanish luthier, Antonio Torres Jurado. The classical guitar has a long history
Classical economics is some debate about what is covered by the term "classical economics", particularly when dealing with the period from 1830–75, and how classical economics relates to neoclassical economics. The classical economists produced their "magnificent dynamics" during a period in which capitalism was emerging from feudalism and in which the Industrial Revolution was leading to vast changes in society. These changes raised the question of how a society could be organized around a system in which every individual sought his or her own (monetary) gain. Classical political economy is popularly associated with the idea that free markets can regulate themselves. Classical