How do lack of education, high national debt, and trade barriers affect developing nations?

they make it impossible for democracy to prevail.

they force the government to impose high taxes on everyone.

they create the basis for poverty.

they reduce the workforce and encourage foreign investment.

B. They create the basis for poverty. (but it could be a different answer

They create the basis for poverty.

Explanation:

If a country has a lack of education, that means: Less available jobs because no one would have the knowledge or technology to do them and more disease because of the lack of doctors and pharmacists, etc.  High national debt would indeed result in tax raises among other things like federal budget cuts. A trade barrier stops a country from being able to import necessities. Not a single country has all the natural resources to sustain themselves.

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.