Which of the following statements best describes the Khmer Empire?

The Khmer Empire flourished in Southeast Asia from about 800 to 1431 CE, centered on the region of present-day Cambodia. Its capital, Angkor, grew into the world’s largest pre-industrial city. The other choices describe unrelated peoples or regions, so the best answer is “It developed the world’s largest pre-industrial city between 800 and 1431 CE.”

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