- "Yankee" redirects here, you may also be looking for the New York Yankees.
The term "Yankee traders" referred to American sailors of the 18th and 19th centuries who traveled Earth's oceans "in search of mercantile and territorial opportunity." 24th century Federation scholars would compare the Ferengi to these ancient seafarers. (TNG: "The Last Outpost")
Samuel Clemens told a reporter in an interview about the people from the future, that they're there to foul them "just as my Yankee did in King Arthur's time." (TNG: "Time's Arrow, Part II") At this time he was referring to his book "A Connecticut Yankee in King Arthur's Court" which he wrote under his alias Mark Twain. (VOY: "Spirit Folk")
Q remarked, "...this is a much more colorful representation for a Human of American descent, don't you think? An elegant manor house, a beautiful Southern belle, a dashing Union officer determined to win her affections despite her hatred for Yankee interlopers." while talking to Kathryn Janeway. (VOY: "The Q and the Grey")