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The first inhabitants of what would be named the Americas migrated across this bridge in search of food . When the glaciers melted , water engulfed Beringia , and the Bering Strait was formed . Later settlers came by boat across the narrow strait . -LRB- The fact that Asians and American Indians share genetic markers on a Y chromosome lends credibility to this migration theory . -RRB- Continually moving southward , the settlers eventually populated both North and South America , creating unique cultures that ranged from the highly complex and urban Aztec civilization in what is now Mexico City to the woodland tribes of eastern North America .
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.