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As manufacturing in the United States declined, research and development expanded. One such region became known as the Research Triangle. Which three universities form this triangle?
Mississippi State University, University of Tennessee, Auburn University.
University of Maine, University of Vermont, University of New Hampshire.
North Carolina State University, Duke University, University of North Carolina at Chapel Hill.
University of Kentucky, Ohio State University, Purdue University.
North Dakota State University, South Dakota University, University of Minnesota.