No country "depends" on another country unless it is in the unique situation such as where a river flows through a country supplying its water needs but can be stopped by the upstream country. Any country that is viable as a country can survive. read more
Rich countries need developing for production of consumer products. The most typical could be clothes. Developing countries have much lower costs of produtction. read more
Developing countries depend on developed countries for various reasons to a large extent. Certain groups in the former (landlords, entrepreneurs, merchants) with high income and social status constitute a very small elite ruling class. read more
China, India, and many other developing economies, though still desperately poor, grow at fantastic paces, while the rich economies of Europe, Japan, and America seem to plod. The developing economies possess youthful, eager workforces. read more