What is the difference between a refugee and an internally displaced person?

Refugees are migrants who must have crossed an international frontier because of a well-founded fear of persecution. IDPs are people who have involuntarily been uprooted and displaced but still remain in their own countries. persons (also known as "IDPs") are "persons or groups of persons who have been forced or obliged to flee or to leave their homes or places of habitual residence

john maynard keynes developed new economic theories in response to the stock market crash of 1929. great depression of the 1930s. first and second world wars. economic boom of the 1950s.

apartheid, (afrikaans: “apartness”) policy that governed relations between south africa's white minority and nonwhite majority and sanctioned racial segregation and political and economic discrimination against nonwhites. people should not get this wrong. i was just answering a question.