The evidence that best shows Squanto's loyalty to the settlers is that which shows that Squanto never abandoned the settlers and accompanied them to the day of his death.
This evidence is best presented by the sentence "... and never left them till he died."
This can be seen in the text above, as this text shows that:
As shown, this excerpt is part of "Of Plymouth Plantation" which is a diary of the first English settlers in America and the hardships they went through.
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