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Although no one knows what happened to the Olmec after about 400 BCE , in part because the jungle reclaimed many of their cities , their culture was the base upon which the Maya and the Aztec built . It was the Olmec who worshipped a rain god , a maize god , and the feathered serpent so important in the future pantheons of the Aztecs -LRB- who called him Quetzalcoatl -RRB- and the Maya -LRB- to whom he was Kukulkan -RRB- . The Olmec also developed a system of trade throughout Mesoamerica , giving rise to an elite class . THE MAYA After the decline of the Olmec , a city rose in the fertile central highlands of Mesoamerica .
Please check all the words that can be used instead of the target word in the same context. Note that the morphology of the target (third person singular, past tense etc.) is considered to be applied to the candidate automatically in the process of paraphrasing.