<a href="https://en.wikipedia.org/wiki/Claude_Chappe" id="mwaA" rel="mw:WikiLink" title="Claude Chappe">Claude Chappe</a> demonstrates the first <a href="https://en.wikipedia.org/wiki/Optical_telegraph" id="mwaQ" rel="mw:WikiLink" title="Optical telegraph">semaphore</a> line near Paris.