According to the united nations many countries with very high developments are located and many countries with low development are located a. africa, north america b. north america, europe c. europe, africa

C. Europe, Africa

Explanation:

According to the United Nations, the least developed countries are low-income countries. These face severe structural impediments to sustainable development. As result, they are very vulnerable to the economic and environmetal shocks, they also have low levels of human assets.

On the other hand, developed countries have a developed economy, with high income,  and advanced tech infrastructure. They are prepared for the economic and environmental shocks.  

The United Nations includes most part of Europe in the developed countries list, it includes: the European Union, New E..U. members and Iceland, Norway and Switzerland.

In the least developed countries list 34 African countries are included.  

speed

explanation:

answer; the president uses mass media to gain support for policies;