Ignace Chappe attempted to increase interest in using the semaphore line for commercial messages, such as commodity prices; however, the business community resisted
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Ignace Chappe attempted to increase interest in using the semaphore line for commercial messages, such as commodity prices; however, the business community resisted
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-22 from Wikipedia. The archived copy is preserved so this citation survives link rot.