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Together, Melanesia, Micronesia, and Polynesia make up the region described as the Pacific islands, or Oceania. A. The first Europeans to reach the area assumed that the islands' original inhabitants must have drifted to Oceania, perhaps from Egypt or the Americas. B. It is now believed that the process of colonization required a great deal of skill, determination, and planning and could not have happened by chance. C. Using linguistic and archaeological evidence, anthropologists have determined that the first Pacific islanders were Austronesian people from Southeast Asia. D. New evidence suggests that, rather than being isolated, Pacific islanders engaged in trade and social interaction with peoples living in Southeast Asia. E. Although early colonizers of the islands probably came from agriculture-based societies, they were obliged to adopt an economy based on fishing. F. Computer simulations of the winds and currents in the Pacific have shown that reaching the Pacific islands was probably much easier than previously thought.