Plural of Carolina, or specifically referring to North Carolina and South Carolina as a pair of U.S. states.
From the Latin 'Carolus' (Charles), as both states were originally named 'Carolina' in honor of King Charles II of England in the 17th century.
The Carolinas were originally a single enormous colonial territory named for a king who never set foot there—and when they finally split in 1729, it wasn't because of disagreement but because the territory was simply too massive to govern as one!
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