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The Houston region today is undergoing two far-reaching transformations, one in the composition of its population, the other in the foundations of its economy. As a main destination for the new immigration, this community is rapidly becoming one of the most ethnically and culturally diverse in America. At the same time, because of worldwide competition and advances in computers and robotics, the many good blue-collar jobs that Houston's oil-based economy generated for almost a century have largely disappeared. This has made it much more difficult for poor citizens of all ethnic backgrounds to work their way out of poverty.