Why are the terms First World and Third World, and Global North and Global South used interchangeably? Is it justifiable to use them as such?

In descriptive writing, the conclusion should introduce a new idea return the discussion to the general level use a quotation explain why the essay was effective

Essay about how to keep environment clean and safe?

In “we wear the mask,” which message is conveyed by dunbar’s repetition of the phrase “we wear the mask”?