Quinary economic activities are sometimes considered as a subset of quaternary economic activities. Other times, they are considered to be an independent group of economic activity. Quinary economics are separate from quaternary because they use collaborative research projects, data analysis, and scientific inquiry designed to improve policy-making of governments and decision-making of corporations. It is an extremely modern branch of economic activity and one that is still being defined.

China provides the greatest supply of low-cost labor, followed by South Korea and India. New England is not a feasible option.

Secondary economic activities are areas of business concerned with the manufacturing or assembly of raw materials into products that can be sold on the mass-market. During the Industrial Revolution most of Europe and the United States of America was engaged in secondary economic activities.

The world’s biggest port in contemporary times is Shanghai. Shanghai is a port city in eastern China. In the last few decades China’s trade, particularly its exports, have grown dramatically. Rapid industrialization and immense government spending have contributed to this and China is now the biggest trading partner for the majority of countries in the world (overtaking the United States).

Countries in the “periphery” are countries that have a very low standard of living and low levels of industrial productivity. Bolivia is in the Andean region of South America, which is mostly comprised of “periphery” countries. Afghanistan is in the Middle East, which is mostly comprised of “periphery” countries. Ethiopia is in Africa, which is almost entirely comprised of “periphery” countries with a couple of notable exceptions (like South Africa and Nigeria). Albania is in Southeastern Europe and is easily one of the poorest countries in Europe.

Despite having the world’s second largest economy, China is not considered one of the “core” countries in the Core-Periphery Model. This is because standards of living and levels of product consumption are still quite low for a large majority of Chinese citizens. China’s economy is heavily driven by its manufacturing and exporting, which is a characteristic of a “semi-peripheral” country.

Industrial production can be outsourced from economically developed nations (i.e., the United States) to developing nations (i.e., India) to save costs. The cost of labor tends to be cheaper in developing nations; more specifically wages are lower/less costly for women than for men.

LDCs are countries that are in an early stage of economic development. India has advanced with its recent information technology boom, so it is not an LDC.

“World Cities” are so-named because they are global centers of economic activity. They are generally also centers of cultural diffusion and are extremely diverse, but this is not what makes them “World Cities.” Many are capital cities of major economic countries, but many are not, such as New York City and Los Angeles. the key to this question was narrowing the possibilities down to the most specific, and most significant, reason for the appellation.

The generation of knowledge and the sharing of research are associated with quaternary economic activities. Examples of this include teaching, tourism, and customer service. As the economies of Europe and North America have transitioned away from primary and secondary economic activities the majority of the population has become employed in quaternary or tertiary economic activities.