Economic development is important in countries because it

reduces poverty and increases social and political stability

Explanation:

Economic development tend to provide large opportunities for business to thrive. This will lead to an increase in job employment and average salaries that earned by the citizens.

When this happen, the budget that government have will also increase since the majority of it come from income taxes. This will make the government able to fund more social programs that increase the country's social and political stability.

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer

d.

thist title points out that you are explaining the nature of the u.s. government. it is the most specific. a representative government consists of a government where decisions are taken according to a voting system. the most essential aspect of a representative government is found in the different structures where voting rights are granted to different groups of people. for example, voting for governor, mayor, president, local police chief etc.