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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Commercial Telegraphers Union of America ： ウィキペディア英語版 Commercial Telegraphers Union of America The Commercial Telegraphers Union of America (CTUA) was a United States labor union formed to promote the interests of commercial telegraph operators. ==Background and early history== The first practical telegraph system in the United States was put into operation by Samuel F. B. Morse and Alfred Vail between Baltimore, Maryland and Washington, DC, in 1844. By 1846, telegraph lines extended along the entire eastern seaboard and were rapidly being built westward into the interior of the country. Early uses of the telegraph included sending press reports, commodities prices, and business transactions. As time went on, the telegraph was increasingly used by the general public for sending personal messages. During the American Civil War, the telegraph was used extensively by the Union Army for military intelligence purposes.〔For the early history of the telegraph in the United States, see Robert L. Thompson, ''(Wiring A Continent: The History of the Telegraph Industry in the United States, 1832-1866 )''. Princeton, New Jersey: Princeton University Press, 1947.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Commercial Telegraphers Union of America」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.