The growth of sweet potatoes and coconut in Polynesia shows a connection between it and what other region?

Name: The growth of sweet potatoes and coconut in Polynesia shows a connection between it and what other region?
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The growth of sweet potatoes, which are native to South America, in Polynesia suggests prehistoric contact between these regions. Coconuts, although found in many tropical areas, also support the theory of ancient maritime connections.

The Growth of Sweet Potatoes and Coconut in Polynesia Shows