the coast or coastal region of a country, especially where it meets the sea.
From 'sea' (Old English 'sæ') + 'board' (side or edge, from Old English 'bord'). The word originally meant the edge or side of the sea, combining two Germanic roots that describe the boundary between land and ocean.
The 'seaboard' was historically the most economically powerful part of countries like the United States because ships could bring goods from around the world—that's why major cities like New York, Boston, and Charleston were built there.
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