Adam Smith’s Classical Theory of Development is an important foundation of modern economic thought. Smith, an eighteenth-century Scottish economist and philosopher, presented his ideas on economic development most systematically in his famous work *An Inquiry into the Nature and Causes of the Wealth of Nations* (1776). Although Smith did not formulate a formal “development theory” in the modern sense, his analysis explained how economies could increase productivity, expand markets, accumulate capital, and raise the wealth of nations. His theory emphasized the importance of economic freedom, division of labour, capital accumulation, competition, and the expansion of markets. A major assumption of Smith’s theory is that individuals are motivated by self-interest. Smith argued that people generally seek to improve their own economic position. When individuals are free to pursue their interests within a competitive market, their activities can contribute to the production of goods and services and to the welfare of society. The famous idea of the “invisible hand” explains how private economic decisions may unintentionally promote wider economic prosperity. Another important assumption is the existence of economic freedom. Smith believed that individuals should have freedom to engage in occupations, trade, investment, and production. Excessive government intervention, monopolies, restrictions on trade, and unnecessary regulations were considered obstacles to economic progress. The market mechanism, through prices and competition, was expected to coordinate economic activities efficiently. Smith also assumed that human beings have a natural tendency to exchange and trade. This tendency makes specialization possible. As people and firms specialize in particular activities and exchange their products with others, overall productivity increases. The extent of specialization, according to Smith, depends significantly on the extent of the market. Larger markets permit greater specialization and therefore greater productivity. The division of labour is the central element of Smith’s explanation of economic development. He illustrated its importance through the example of a pin factory, where production is divided into several specialized operations. A worker performing a particular task repeatedly becomes more skilled and efficient. Division of labour increases productivity through three major mechanisms: improvement in the skill of workers, saving of time that would otherwise be lost in changing from one activity to another, and the development or use of machinery that facilitates specialized production. Capital accumulation is another essential feature of Smith’s theory. Increased productivity generates higher income, and part of this income can be saved and invested. Investment in machinery, tools, buildings, infrastructure, and other productive assets increases the productive capacity of the economy. Thus, saving and investment create a cumulative process of economic growth. Capital accumulation also encourages further specialization and employment, thereby reinforcing economic expansion. The theory gives considerable importance to the expansion of markets. A small market limits the possibilities for specialization because producers cannot easily sell large