The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Choose the missing words of the phrase or sentence.

Many people have dreamed of a world in which all people could speak and understand the same language. They feel that many of the difficulties that exist between the nations of the world could be eliminated if people could communicate with each other in a common tongue - the one newly created solely for the purpose of international communication.
Global need of a(an) （） language.