Final answer:
In this piece, Gates labels Jefferson as the 'father' of literature, denoting his significant influence and contributions.
Step-by-step explanation:
In Mister Jefferson and the Trials of Phillis Wheatley, Gates refers to Jefferson as the father of literature. This is used as a metaphor to denote Jefferson's significant influence and contribution to literature. Thomas Jefferson, being a highly influential figure, played a pivotal role in shaping and promoting literature, hence the term 'father of literature'.
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