The separation of work into number of tasks is known as division of Labor.
It is important for the economic progress because it allows the people to specialise in particular tasks. The specialisation makes them more efficient and reduces the cost of total production.
International division of labour is the process that occurs when the production in not limited to national economies. According to the "old " International division of labour the underdeveloped countries were incorporated in the world economy as the supplier of agricultural commodities and minerals, It lasted till 1970's. While according to the theory of New International Division of Labour(NIDL) the manufacturing is shifting from advanced capitalist countries to developing countries.
Voltaire called the late eighteenth century, "the century of revolutions." What examples does the text include to explain the broader context for voltaire's comments?